for the following products
(1H)-benzimidazole-2-n-propyl-4-methyl-6-(1-methylbenzimidazole-2-yl) | 2-n-Propyl-4-(methyl benzimidazol-2-yl)benzimidazole | 2-N-Propyl-4-methyl-6-(1-methyl benzimidazole-2-yl) benzimidazole and 2-n-Propyl-4-methyl-6-(1-methylbenzimidazol-2-yl)-benzimidazole
