You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(4-phenylphenyl)-4-[3-[3-[3-phenyl-5-[2-(4-phenylphenyl)-[1]benzothiolo[2,3-d]pyrimidin-4-yl]phenyl]phenyl]phenyl]-[1]benzothiolo[2,3-d]pyrimidine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C68H42N4S2
assistant