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 9-[4-carbazol-9-yl-6-(6-carbazol-9-yl-1,2-dihydropyridin-3-yl)pyrimidin-2-yl]carbazole .
user
C45H30N6
assistant