You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 9-(3-cyanophenyl)-8-[2-[2-[9-(2-cyanophenyl)carbazol-2-yl]phenyl]phenyl]carbazole-3-carbonitrile .
user
C51H29N5
assistant