You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[4-(methylaminomethyl)phenyl]-3,10-diazatricyclo[6.4.1.04,13]trideca-1,4,6,8(13)-tetraen-9-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H19N3O
assistant