InChI=1/C15H13N3O5/c1-9(14-12(19)6-3-7-13(14)20)16-17-15(21)10-4-2-5-11(8-10)18(22)23/h2-8,19-20H,1H3,(H,17,21)/b16-9+/f/h17H FFFCB98F7E196484