You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[2-(cyclohexen-1-yl)ethylcarbamoyl]-2-[(3R,5R)-3,5-dimethylpiperidin-1-yl]acetamide into its molecular formula.
user
C18H31N3O2
assistant