You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
8-methyl-2-[2-[2-methyl-4-[[4-(phosphanylmethyl)phenyl]methoxy]phenyl]ethyl]benzo[f][1,7]naphthyridin-5-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C30H30N3OP
assistant