InChI=1S/C20H14F5NO4/c21-15-8-11(10-3-1-4-12(7-10)30-20(23,24)25)9-16(22)17(15)26-18(27)13-5-2-6-14(13)19(28)29/h1,3-4,7-9H,2,5-6H2,(H,26,27)(H,28,29)