2-(3-(1-(4-Carboxy)benzyl-3-methyl-6-trifluoro methyl-2-benzimidazolinylidene)propenyl)-3-methyl-1-(4-carboxy)benzyl-6-trifluoromethyl benzimidazolium hydroxide,inner salt
2-(3-(1-(4-Carboxy)benzyl-3-methyl-6-trifluoro methyl-2-benzimidazolinylidene)propenyl)-3-methyl-1-(4-carboxy)benzyl-6-trifluoromethyl benzimidazolium hydroxide,inner salt