85248-89-1

hydrogen [4-[[4-[(4-ethoxyphenyl)amino]phenyl][4-[ethyl[3(or 4)-sulphonatobenzyl]amino]-o-tolyl]methylene]-3-methylcyclohexa-2,5-dien-1-ylidene](ethyl)[3(or 4)-sulphonatobenzyl]ammonium