You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule N-[4-[9-(9,9-dimethylfluoren-2-yl)-6-[4-[3-phenyl-1-(4-phenylphenyl)propyl]phenyl]carbazol-3-yl]phenyl]-N,4-diphenylaniline .
user
C78H60N2
assistant