You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S)-N-[(1S,2S,3S)-2,3-dimethylcyclohexyl]-2-[4-(2-methylphenyl)piperazin-1-yl]propanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H35N3O
assistant