You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[4-(1,3,4,5,7,8,9,9a-octahydropyrrolo[1,2-a][1,4]diazepin-2-ylmethyl)phenyl]-N-methylmethanamine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H27N3
assistant