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 [3-[2-[3-(N-phenylanilino)carbazol-9-yl]benzoyl]phenyl]-[2-[3-(N-phenylanilino)carbazol-9-yl]phenyl]methanone .
user
C68H46N4O2
assistant