[4-[bis[3-(carboxymethyl)-4-methoxyphenyl]methylene]-2,5-cyclohexadien-1-ylidene]dimethylammonium

N-[4-[Bis[3-(carboxymethyl)-4-methoxyphenyl]methylene]-2,5-cyclohexadien-1-ylidene]-N-methylmethanaminium