You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-but-2-ynyl-3-phenyl-2-[1-[(4-propylphenyl)methylsulfonyl]pyrrolidin-2-yl]indole The above is the IUPAC name of a molecule. Write its molecular formula.
user
C32H34N2O2S
assistant