InChI=1/C15H11N3O5/c1-23-9-4-2-3-8(5-9)11-6-12(15(21)22)18-13(17-11)10(7-16-18)14(19)20/h2-7H,1H3,(H,19,20)(H,21,22)/p-2/fC15H9N3O5/q-2 34A4D8B323F28AE8