2-[4-({[(4-aminophenyl)amino]carbonyl}amino)phenoxy]-2-methylpropanoic acid InChI=1/C17H19N3O4/c1-17(2,15(21)22)24-14-9-7-13(8-10-14)20-16(23)19-12-5-3-11(18)4-6-12/h3-10H,18H2,1-2H3,(H,21,22)(H2,19,20,23 propanoic acid, 2-[4-[[[(4-aminophenyl)amino]carbonyl]amino]phenoxy]-2-methyl-