You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[(4aS,7aS)-4,4-diphenyl-2,3,4a,5,7,7a-hexahydrothiopyrano[2,3-c]pyrrol-6-yl]-2-(2-pyrrolidin-1-ylphenyl)ethanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C31H34N2OS
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