You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 11,13-diphenyl-9-[4-(1-triphenylen-2-ylbenzimidazol-2-yl)phenyl]indolo[3,2-c]phenanthridine into its molecular formula.
user
C62H38N4
assistant