You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[2-(cyclohexen-1-yl)ethyl]-3,4,7,8,9,9a-hexahydropyrrolo[1,2-a][1,4]diazepine-1,5-dione is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H24N2O2
assistant