You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1S,2S)-N-(cyanomethyl)-2-[[4-[2-(2,2,2-trifluoroethylamino)ethylsulfanyl]phenyl]sulfonylmethyl]cyclohexane-1-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H26F3N3O3S2
assistant