You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-[4-[(E)-2-[4-[2,3-difluoro-4-[4-[(E)-prop-1-enyl]phenyl]phenyl]cyclohexyl]ethenyl]-2-fluorocyclohex-2-en-1-yl]oxirane by IUPAC nomenclature, provide its molecular formula.
user
C31H33F3O
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