You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 3-(9-phenylcarbazol-3-yl)-9-[3-[3-[4-[3-[3-(2-phenylphenyl)phenyl]phenyl]phenyl]phenyl]phenyl]carbazole into molecular formula.
user
C72H48N2
assistant