You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3S)-1-[(1R)-1-(3-methoxyphenyl)ethyl]-N-(2,2,2-trifluoroethyl)piperidine-3-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C17H23F3N2O2
assistant