3-(5,6-dichloro-1-ethyl-2-methyl-1H-benzimidazol-3-ium-3-yl)-2-hydroxypropane-1-sulfonate 生成 3-[(2Z)-5,6-dichloro-2-[(E)-3-[5,6-dichloro-1-ethyl-3-(2-hydroxy-3-sulfopropyl)benzimidazol-3-ium-2-yl]prop-2-enylidene]-3-ethylbenzimidazol-1-yl]-2-hydroxypropane-1-sulfonate