InChI=1/C17H13N3O5/c21-16-14(18-17(22)19-16)9-12-3-1-2-4-15(12)25-10-11-5-7-13(8-6-11)20(23)24/h1-9H,10H2,(H2,18,19,21,22)/b14-9-/f/h18-19H 2F9B0976AE21B648