You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named [(1R,2R,5S,6S,9S,10S,12S,13R)-5,9-dimethyl-14-methylidene-4-oxo-3,11-dioxatetracyclo[7.5.0.02,6.010,12]tetradecan-13-yl] (Z)-2-methylbut-2-enoate is given. What is its corresponding molecular formula?
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C20H26O5
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