<link:linkbase
    xmlns:link="http://www.xbrl.org/2003/linkbase"
    xmlns:xlink="http://www.w3.org/1999/xlink"
    >
   <link:labelLink xlink:role="http://www.xbrl.org/2003/role/link" xlink:type="extended">

      <link:loc xlink:href="815600B7FD80E48C1896-2021-12-31.xsd#ext_CashFlowHedgeReserves" xlink:label="ext_CashFlowHedgeReserves" xlink:type="locator"/>
      <link:labelArc order="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ext_CashFlowHedgeReserves" xlink:to="ext_CashFlowHedgeReserves_lbl" xlink:type="arc"/>
      <link:label id="id_1" xlink:label="ext_CashFlowHedgeReserves_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Cash flow hedge reserves</link:label>

      <link:loc xlink:href="815600B7FD80E48C1896-2021-12-31.xsd#ext_ContributionOfFirstConsolidationOfAcquisitionsOnCashAndCashEquivalents" xlink:label="ext_ContributionOfFirstConsolidationOfAcquisitionsOnCashAndCashEquivalents" xlink:type="locator"/>
      <link:labelArc order="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ext_ContributionOfFirstConsolidationOfAcquisitionsOnCashAndCashEquivalents" xlink:to="ext_ContributionOfFirstConsolidationOfAcquisitionsOnCashAndCashEquivalents_lbl" xlink:type="arc"/>
      <link:label id="id_2" xlink:label="ext_ContributionOfFirstConsolidationOfAcquisitionsOnCashAndCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Contribution of first consolidation of acquisitions on cash and cash equivalents</link:label>

      <link:loc xlink:href="815600B7FD80E48C1896-2021-12-31.xsd#ext_DepreciationAmortizationProvisionsAndWritedowns" xlink:label="ext_DepreciationAmortizationProvisionsAndWritedowns" xlink:type="locator"/>
      <link:labelArc order="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ext_DepreciationAmortizationProvisionsAndWritedowns" xlink:to="ext_DepreciationAmortizationProvisionsAndWritedowns_lbl" xlink:type="arc"/>
      <link:label id="id_3" xlink:label="ext_DepreciationAmortizationProvisionsAndWritedowns_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Depreciation, amortization, provisions and write-downs</link:label>

      <link:loc xlink:href="815600B7FD80E48C1896-2021-12-31.xsd#ext_DisposalOfFixedAssetsAndShareholdings" xlink:label="ext_DisposalOfFixedAssetsAndShareholdings" xlink:type="locator"/>
      <link:labelArc order="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ext_DisposalOfFixedAssetsAndShareholdings" xlink:to="ext_DisposalOfFixedAssetsAndShareholdings_lbl" xlink:type="arc"/>
      <link:label id="id_4" xlink:label="ext_DisposalOfFixedAssetsAndShareholdings_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Disposal of fixed assets and shareholdings</link:label>

      <link:loc xlink:href="815600B7FD80E48C1896-2021-12-31.xsd#ext_FreeCashFlow" xlink:label="ext_FreeCashFlow" xlink:type="locator"/>
      <link:labelArc order="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ext_FreeCashFlow" xlink:to="ext_FreeCashFlow_lbl" xlink:type="arc"/>
      <link:label id="id_5" xlink:label="ext_FreeCashFlow_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Free Cash Flow</link:label>

      <link:loc xlink:href="815600B7FD80E48C1896-2021-12-31.xsd#ext_GrossOperatingIncomeEBITDA" xlink:label="ext_GrossOperatingIncomeEBITDA" xlink:type="locator"/>
      <link:labelArc order="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ext_GrossOperatingIncomeEBITDA" xlink:to="ext_GrossOperatingIncomeEBITDA_lbl" xlink:type="arc"/>
      <link:label id="id_6" xlink:label="ext_GrossOperatingIncomeEBITDA_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Gross operating income - EBITDA</link:label>

      <link:loc xlink:href="815600B7FD80E48C1896-2021-12-31.xsd#ext_IAS19Reserves" xlink:label="ext_IAS19Reserves" xlink:type="locator"/>
      <link:labelArc order="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ext_IAS19Reserves" xlink:to="ext_IAS19Reserves_lbl" xlink:type="arc"/>
      <link:label id="id_7" xlink:label="ext_IAS19Reserves_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">IAS 19 reserves</link:label>

      <link:loc xlink:href="815600B7FD80E48C1896-2021-12-31.xsd#ext_IssuanceOfLoans" xlink:label="ext_IssuanceOfLoans" xlink:type="locator"/>
      <link:labelArc order="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ext_IssuanceOfLoans" xlink:to="ext_IssuanceOfLoans_lbl" xlink:type="arc"/>
      <link:label id="id_8" xlink:label="ext_IssuanceOfLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Issuance of loans</link:label>

      <link:loc xlink:href="815600B7FD80E48C1896-2021-12-31.xsd#ext_NetFinancialInterests" xlink:label="ext_NetFinancialInterests" xlink:type="locator"/>
      <link:labelArc order="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ext_NetFinancialInterests" xlink:to="ext_NetFinancialInterests_lbl" xlink:type="arc"/>
      <link:label id="id_9" xlink:label="ext_NetFinancialInterests_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Net financial interests</link:label>

      <link:loc xlink:href="815600B7FD80E48C1896-2021-12-31.xsd#ext_OtherChangesFinancialAssets" xlink:label="ext_OtherChangesFinancialAssets" xlink:type="locator"/>
      <link:labelArc order="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ext_OtherChangesFinancialAssets" xlink:to="ext_OtherChangesFinancialAssets_lbl" xlink:type="arc"/>
      <link:label id="id_10" xlink:label="ext_OtherChangesFinancialAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Other changes (financial assets)</link:label>

      <link:loc xlink:href="815600B7FD80E48C1896-2021-12-31.xsd#ext_OtherChangesFinancialLiabilities" xlink:label="ext_OtherChangesFinancialLiabilities" xlink:type="locator"/>
      <link:labelArc order="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ext_OtherChangesFinancialLiabilities" xlink:to="ext_OtherChangesFinancialLiabilities_lbl" xlink:type="arc"/>
      <link:label id="id_11" xlink:label="ext_OtherChangesFinancialLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Other changes (financial liabilities)</link:label>

      <link:loc xlink:href="815600B7FD80E48C1896-2021-12-31.xsd#ext_PriorYearResultAllocation" xlink:label="ext_PriorYearResultAllocation" xlink:type="locator"/>
      <link:labelArc order="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ext_PriorYearResultAllocation" xlink:to="ext_PriorYearResultAllocation_lbl" xlink:type="arc"/>
      <link:label id="id_12" xlink:label="ext_PriorYearResultAllocation_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Prior year result allocation</link:label>

      <link:loc xlink:href="815600B7FD80E48C1896-2021-12-31.xsd#ext_ProceedsFromLoans" xlink:label="ext_ProceedsFromLoans" xlink:type="locator"/>
      <link:labelArc order="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ext_ProceedsFromLoans" xlink:to="ext_ProceedsFromLoans_lbl" xlink:type="arc"/>
      <link:label id="id_13" xlink:label="ext_ProceedsFromLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Proceeds from loans</link:label>

      <link:loc xlink:href="815600B7FD80E48C1896-2021-12-31.xsd#ext_PurchaseOfTreasuryShares" xlink:label="ext_PurchaseOfTreasuryShares" xlink:type="locator"/>
      <link:labelArc order="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ext_PurchaseOfTreasuryShares" xlink:to="ext_PurchaseOfTreasuryShares_lbl" xlink:type="arc"/>
      <link:label id="id_14" xlink:label="ext_PurchaseOfTreasuryShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Purchase of treasury shares </link:label>

      <link:loc xlink:href="815600B7FD80E48C1896-2021-12-31.xsd#ext_Reserves" xlink:label="ext_Reserves" xlink:type="locator"/>
      <link:labelArc order="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ext_Reserves" xlink:to="ext_Reserves_lbl" xlink:type="arc"/>
      <link:label id="id_15" xlink:label="ext_Reserves_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Reserves</link:label>

      <link:loc xlink:href="815600B7FD80E48C1896-2021-12-31.xsd#ext_ResultFromNonrecurringTransactions" xlink:label="ext_ResultFromNonrecurringTransactions" xlink:type="locator"/>
      <link:labelArc order="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ext_ResultFromNonrecurringTransactions" xlink:to="ext_ResultFromNonrecurringTransactions_lbl" xlink:type="arc"/>
      <link:label id="id_16" xlink:label="ext_ResultFromNonrecurringTransactions_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Result from non-recurring transactions</link:label>

      <link:loc xlink:href="815600B7FD80E48C1896-2021-12-31.xsd#ext_ResultOfTheYear" xlink:label="ext_ResultOfTheYear" xlink:type="locator"/>
      <link:labelArc order="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ext_ResultOfTheYear" xlink:to="ext_ResultOfTheYear_lbl" xlink:type="arc"/>
      <link:label id="id_17" xlink:label="ext_ResultOfTheYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Result of the year</link:label>

      <link:loc xlink:href="815600B7FD80E48C1896-2021-12-31.xsd#ext_TotalChangesInFinancialAssets" xlink:label="ext_TotalChangesInFinancialAssets" xlink:type="locator"/>
      <link:labelArc order="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ext_TotalChangesInFinancialAssets" xlink:to="ext_TotalChangesInFinancialAssets_lbl" xlink:type="arc"/>
      <link:label id="id_18" xlink:label="ext_TotalChangesInFinancialAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Total changes in financial assets</link:label>

      <link:loc xlink:href="815600B7FD80E48C1896-2021-12-31.xsd#ext_TotalChangesInFinancialLiabilities" xlink:label="ext_TotalChangesInFinancialLiabilities" xlink:type="locator"/>
      <link:labelArc order="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ext_TotalChangesInFinancialLiabilities" xlink:to="ext_TotalChangesInFinancialLiabilities_lbl" xlink:type="arc"/>
      <link:label id="id_19" xlink:label="ext_TotalChangesInFinancialLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Total changes in financial liabilities</link:label>

      <link:loc xlink:href="815600B7FD80E48C1896-2021-12-31.xsd#ext_TotalFinancialBalance" xlink:label="ext_TotalFinancialBalance" xlink:type="locator"/>
      <link:labelArc order="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ext_TotalFinancialBalance" xlink:to="ext_TotalFinancialBalance_lbl" xlink:type="arc"/>
      <link:label id="id_20" xlink:label="ext_TotalFinancialBalance_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Total financial balance</link:label>

      <link:loc xlink:href="815600B7FD80E48C1896-2021-12-31.xsd#ext_OtherReservesAndRetainedEarningsMember" xlink:label="ext_OtherReservesAndRetainedEarningsMember" xlink:type="locator"/>
      <link:labelArc order="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ext_OtherReservesAndRetainedEarningsMember" xlink:to="ext_OtherReservesAndRetainedEarningsMember_lbl" xlink:type="arc"/>
      <link:label id="id_21" xlink:label="ext_OtherReservesAndRetainedEarningsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">OtherReservesAndRetainedEarningsMember</link:label>

      <link:loc xlink:href="815600B7FD80E48C1896-2021-12-31.xsd#ext_ProfitLossAttributableToOwnersOfParent" xlink:label="ext_ProfitLossAttributableToOwnersOfParent" xlink:type="locator"/>
      <link:labelArc order="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ext_ProfitLossAttributableToOwnersOfParent" xlink:to="ext_ProfitLossAttributableToOwnersOfParent_lbl" xlink:type="arc"/>
      <link:label id="id_22" xlink:label="ext_ProfitLossAttributableToOwnersOfParent_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Profit (loss) attributable to owners of parent</link:label>

   </link:labelLink>

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