Name: 1H-PYRAZOLE-3-CARBOXYLIC ACID 1-(2,5-DISULFOPHENYL)-4-[5-[1-(2,5-DISULFOPHENYL)-1,5-DIHYDRO-3-(METHOXYCARBONYL)-5-OXO-4H-PYRAZOL-4-YLIDENE]-1,3-PENTAD