1 IBB 5-(2-imidazolinyl)-2-[2-(4-hydroxyphenyl)-5-benzimidazolyl]benzimidazole 1.000 2 HT 2'-(4-hydroxyphenyl)-5-(4-methyl-1-piperazinyl)-2,5'-bi-benzimidazole 0.722 3 RO2 3-[5-[5-(4-methyl-piperazin-1-yl)-1h-imidazo[4,5-B]pyridin-2-yl]-benzimidazol-2-yl]-phenol 0.722