You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-naphthalen-1-yl-9-phenyl-N-[6-[2,3,5,6-tetradeuterio-4-(N-phenylanilino)phenyl]naphthalen-2-yl]carbazol-2-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C56H39N3
assistant