You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 6,6,9,13-tetramethyl-19-methylidene-8-(3-phenylprop-2-enoyl)-5,7-dioxapentacyclo[10.8.0.02,9.04,8.013,18]icos-17-en-16-one by IUPAC nomenclature, provide its molecular formula.
user
C32H38O4
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