You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (3S)-N-[(1S)-1-[4-(difluoromethylsulfanyl)phenyl]ethyl]-1,1-dioxothiolan-3-amine by IUPAC nomenclature, provide its molecular formula.
user
C13H17F2NO2S2
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