InChI=1/C14H13N3O4/c1-9-2-5-11(17(20)21)8-13(9)16-14(19)15-10-3-6-12(18)7-4-10/h2-8,18H,1H3,(H2,15,16,19 N-(4-hydroxyphenyl)-N'-(2-methyl-5-nitrophenyl)urea urea, N-(4-hydroxyphenyl)-N'-(2-methyl-5-nitrophenyl)-