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,9-diphenyl-N-[4-[3-phenyl-8-(3-phenylphenyl)quinoxalin-2-yl]cyclohexa-1,5-dien-1-yl]-9H-carbazol-9-ium-3-amine .
user
C56H41N4+
assistant