You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
9-[5-[4-(3-carbazol-9-ylcarbazol-9-yl)phenyl]-2-cyanophenyl]carbazole-2-carbonitrile The above is the IUPAC name of a molecule. Write its molecular formula.
user
C50H29N5
assistant