You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (2R,5S,7R,9aR)-1,1,4a,7-tetramethyl-2-phenylmethoxy-5-prop-2-enyl-7-[(3S)-3-trimethylsilyloxypent-4-enyl]-3,4,5,8,9,9a-hexahydro-2H-benzo[7]annulen-6-one by IUPAC nomenclature, provide its molecular formula.
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C33H52O3Si
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