You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[3-(4,6-diphenylpyrimidin-2-yl)-5-(3-phenylphenyl)phenyl]-4-phenyl-[1]benzothiolo[3,2-d]pyrimidine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C50H32N4S
assistant