You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-naphthalen-1-yl-5-N,10-N,3-triphenyl-5-N,10-N-bis[4-[4-(N-phenylanilino)phenyl]phenyl]phenanthro[9,10-d]imidazole-5,10-diamine is the IUPAC name of a molecule. Please give its molecular formula.
user
C91H64N6
assistant