4-{[(4-aminophenyl)amino]carbonyl}benzoic acid InChI=1/C14H12N2O3/c15-11-5-7-12(8-6-11)16-13(17)9-1-3-10(4-2-9)14(18)19/h1-8H,15H2,(H,16,17)(H,18,19 benzoic acid, 4-[[(4-aminophenyl)amino]carbonyl]-