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,13R,15S)-6,8-dihydroxy-5-(2-hydroxy-3-methylbut-3-enyl)-17,17-dimethyl-7,15-bis(3-methylbut-2-enyl)-3,16-dioxapentacyclo[11.4.1.02,11.02,15.04,9]octadeca-4,6,8,11-tetraene-10,14-dione is given. What is its corresponding molecular formula?
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C33H40O7
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