You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-[3-[5,6-dimethyl-7-phenyl-4-(3-phenylphenyl)-5H-1,3-diazepin-2-yl]phenyl]-12,12-dimethylindeno[1,2-c]carbazole is the IUPAC name of a molecule. Please give its molecular formula.
user
C52H41N3
assistant