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Financial instruments - Fair value of the convertible senior secured notes (Details) - Convertible Senior Secured Notes - Financial liabilities at fair value through profit and loss category - Level 3	Jun. 30, 2023	Dec. 31, 2022
Risk-free rate
Financial instruments
Significant unobservable input liabilities	0.044	0.041
Dividend yield
Financial instruments
Significant unobservable input liabilities	0	0
Volatility
Financial instruments
Significant unobservable input liabilities	80.0	65.0
Credit spread
Financial instruments
Significant unobservable input liabilities	27.50	26.38

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

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- Definition

The value of significant unobservable input used in the measurement of the fair value of liabilities.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 13
-IssueDate 2022-03-24
-Paragraph 93
-Subparagraph d
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-URIDate 2022-03-24

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