You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 1-(4-bromoanilino)-3-methyl-5H-pyrido[1,2-a]benzimidazol-10-ium-4-carbonitrile using the IUPAC nomenclature.
user
C19H14BrN4+
assistant