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<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0001160864_LeverageRiskMember" xml:lang="en-US">Leverage Risk [Member]</label>
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<loc xlink:type="locator" xlink:href="cik0001160864-20230306.xsd#cik0001160864_IlliquidInvestmentsRiskMember" xlink:label="loc_cik0001160864_IlliquidInvestmentsRiskMember" />
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<loc xlink:type="locator" xlink:href="cik0001160864-20230306.xsd#cik0001160864_InvestmentCompaniesAndEtfsRiskMember" xlink:label="loc_cik0001160864_InvestmentCompaniesAndEtfsRiskMember" />
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<loc xlink:type="locator" xlink:href="cik0001160864-20230306.xsd#cik0001160864_InfectiousIllnessRiskMember" xlink:label="loc_cik0001160864_InfectiousIllnessRiskMember" />
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<loc xlink:type="locator" xlink:href="cik0001160864-20230306.xsd#cik0001160864_ValuationRiskMember" xlink:label="loc_cik0001160864_ValuationRiskMember" />
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0001160864_ValuationRiskMember" xml:lang="en-US">Valuation Risk [Member]</label>
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<loc xlink:type="locator" xlink:href="cik0001160864-20230306.xsd#cik0001160864_CounterpartyCreditRiskMember" xlink:label="loc_cik0001160864_CounterpartyCreditRiskMember" />
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_cik0001160864_CounterpartyCreditRiskMember" xml:lang="en-US">Counterparty Credit Risk [Member]</label>
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<loc xlink:type="locator" xlink:href="cik0001160864-20230306.xsd#cik0001160864_ConcentrationRiskMember" xlink:label="loc_cik0001160864_ConcentrationRiskMember" />
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<loc xlink:type="locator" xlink:href="cik0001160864-20230306.xsd#cik0001160864_LiborTransitionRiskMember" xlink:label="loc_cik0001160864_LiborTransitionRiskMember" />
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