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 [(1S,2R,4R,7E,9S,10R,11R)-9-hydroxy-4,8-dimethyl-12-methylidene-13-oxo-3,14-dioxatricyclo[9.3.0.02,4]tetradec-7-en-10-yl] 3-methylbut-2-enoate is given. What is its corresponding molecular formula?
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C20H26O6
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