You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name 4-(2-carbazol-9-ylcarbazol-9-yl)-2-(2-phenylphenyl)isoindole-1,3-dione;4-(3-carbazol-9-ylcarbazol-9-yl)-2-(2-phenylphenyl)isoindole-1,3-dione;4-[1,8-di(carbazol-9-yl)carbazol-9-yl]-2-(2-phenylphenyl)isoindole-1,3-dione;4-[2,7-di(carbazol-9-yl)carbazol-9-yl]-2-(2-phenylphenyl)isoindole-1,3-dione ?
user
C200H122N14O8
assistant