You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[4-(9,9-diphenylfluoren-4-yl)phenyl]-4-naphthalen-2-yl-6-phenyl-1,3,5-triazine is the IUPAC name of a molecule. Please give its molecular formula.
user
C50H33N3
assistant