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 N-phenyl-N-[4-[2-(2-phenylcarbazol-9-yl)dibenzofuran-4-yl]phenyl]dibenzofuran-1-amine .
user
C54H34N2O2
assistant