You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 9-phenyl-N-[3-(9-phenylfluoren-9-yl)phenyl]-N-[3-(9-phenylxanthen-9-yl)phenyl]carbazol-3-amine into its molecular formula.
user
C68H46N2O
assistant