You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3,4-dihydro-2H-quinolin-1-yl-[5-[(2-methoxyphenyl)methylamino]pyridin-3-yl]methanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H23N3O2
assistant