169132-74-5 Benzenamine, N,N-dimethyl-4-(2-methyl-1,4-dihydropyrimido(1,2-a)benzimidazol-4-yl)- N,N-Dimethyl-4-(2-methyl-1,4-dihydropyrimido(1,2-a)benzimidazol-4-yl)benzenamine