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 4-(9,9-dimethylfluoren-3-yl)-2-[3-[3-(9-phenylcarbazol-4-yl)carbazol-9-yl]phenyl]benzo[h]quinazoline .
user
C63H42N4
assistant