You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 1-methyl-9-[2-[6-[2-(1-methylcarbazol-9-yl)-3-phenylphenyl]-2-phenylpyrimidin-4-yl]-3-phenylphenyl]carbazole .
user
C60H42N4
assistant