1,7'-Dimethyl-2'-propyl-2,5'-bibenzimidazole;4-Methyl-6-(1-methylbenzimidazol-2-yl)-2-propylbenzimidazole;1H-Benzimidazole-2-n-propyl-4-methyl-6-(1'-methylbenzimidazole-2'-yl);
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