1 AAI Trans-4-(7-carbamoyl-1h-benzimidazol-2-yl)-1-propylpiperidinium 1.000 2 NU3 2-(4-hydroxyphenyl)-1h-benzimidazole-4-carboxamide 0.739 3 BZC 2-(3'-methoxyphenyl) benzimidazole-4-carboxamide 0.708