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-[(Z)-2-cyano-2-(6-methyl-1H-benzimidazol-2-yl)ethenyl]-3-methyl-1-oxo-5H-pyrido[1,2-a]benzimidazole-4-carbonitrile .
user
C24H16N6O
assistant