You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 2-[9-[1,3-dioxo-2-(2,4,6-triphenylphenyl)isoindol-4-yl]carbazol-1-yl]-3-methyl-2,3-dihydropyridine-6-carbonitrile ?
user
C51H34N4O2
assistant