InChI=1/C15H12N2O3/c1-9-13-8-11(5-6-14(13)16-15(9)18)10-3-2-4-12(7-10)17(19)20/h2-9H,1H3,(H,16,18)/t9-/m1/s1/f/h16H 8EC4BC0CB7F4CF0E