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 2,3,5-tri(carbazol-9-yl)-6-[2-(trifluoromethyl)carbazol-9-yl]pyridine-4-carbonitrile .
user
C55H31F3N6
assistant