You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as N-phenyl-N-[4-[2-[4-(4-phenyl-N-(4-phenylphenyl)anilino)phenyl]ethenyl]phenyl]naphthalen-1-amine using the IUPAC nomenclature.
user
C54H40N2
assistant