You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[[4-(difluoromethylsulfanyl)phenyl]methyl]-N-(furan-2-ylmethyl)pyrrolidine-2-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H20F2N2O2S
assistant