You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-[9-[4-(3,5-diphenylphenyl)phenyl]carbazol-2-yl]-9-(3-phenylphenyl)carbazole;2-[9-[4-(3,5-diphenylphenyl)phenyl]carbazol-2-yl]-9-[3-(3-phenylphenyl)phenyl]carbazole;3-[9-[4-(3,5-diphenylphenyl)phenyl]carbazol-3-yl]-9-[4-(3-phenylphenyl)phenyl]carbazole;9-[4-(3-phenylphenyl)phenyl]-3-[9-[4-(3-phenylphenyl)phenyl]carbazol-3-yl]carbazole by IUPAC nomenclature, provide its molecular formula.
user
C252H168N8
assistant