You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[9-(4,6-diphenylpyridin-2-yl)carbazol-3-yl]-9-(4-phenylphenyl)carbazole;3-[9-[4-(4,6-diphenylpyridin-2-yl)phenyl]carbazol-2-yl]-9-phenylcarbazole;2-[9-[4-(4,6-diphenylpyridin-2-yl)phenyl]carbazol-3-yl]-9-(4-phenylphenyl)carbazole is the IUPAC name of a molecule. Please give its molecular formula.
user
C165H109N9
assistant