InChI=1S/C20H10F7NO4/c21-13-12(8-3-1-4-9(7-8)32-20(25,26)27)14(22)16(24)17(15(13)23)28-18(29)10-5-2-6-11(10)19(30)31/h1-5,7H,6H2,(H,28,29)(H,30,31)