You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2,5-dioctyl-1,4-bis[4-[4-(N-phenylanilino)phenyl]phenyl]pyrrolo[3,4-c]pyrrole-3,6-dione The above is the IUPAC name of a molecule. Write its molecular formula.
user
C70H70N4O2
assistant