US7795293B2 - 3′-[(2z)-[1-(3,4-Dimethylphenyl)-1,5-Dihydro-3-Methyl-5-Oxo-4h-Pyrazol-4-Ylidene]hydrazino]-2′-Hydroxy-[1,1′-Biphenyl]-3-Carboxylic Acid Bis-(monoethanolamine)