1H-benzimidazole, 2-(2,5-dimethyl-1H-pyrrol-3-yl)- 2-(2,5-dimethyl-1H-pyrrol-3-yl)-1H-benzimidazole InChI=1/C13H13N3/c1-8-7-10(9(2)14-8)13-15-11-5-3-4-6-12(11)16-13/h3-7,14H,1-2H3,(H,15,16