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 7,8-dichloro-3-methyl-2-(naphthalen-2-yldiazenyl)-1-oxo-5H-pyrido[1,2-a]benzimidazole-4-carbonitrile .
user
C23H13Cl2N5O
assistant