You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named [(3aR,4R,6E,9S,10Z,11aR)-6,10-dimethyl-4-(3-methylbutanoyloxy)-3-methylidene-2-oxo-3a,4,5,8,9,11a-hexahydrocyclodeca[b]furan-9-yl] (E)-4-hydroxy-2-(hydroxymethyl)but-2-enoate by IUPAC nomenclature, provide its molecular formula.
user
C25H34O8
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