InChI=1/C17H12N2O3/c20-15-14(11-12-7-3-1-4-8-12)16(21)19(17(22)18-15)13-9-5-2-6-10-13/h1-11H,(H,18,20,22)/p-1/b14-11-/fC17H11N2O3/q-1 B3F2F3992442C1B6