You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named (5E)-5-[(3aS,4R,5R,6aR)-5-hydroxy-4-[(E,3R,4R)-3-hydroxy-4-methyloct-1-en-6-ynyl]-3,3a,4,5,6,6a-hexahydro-1H-pentalen-2-ylidene]pentanoic acid by IUPAC nomenclature, provide its molecular formula.
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C22H32O4
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