InChI=1S/C17H16F6N2O2/c1-8-2-5-13(15(27)17(21,22)23)25(8)9-3-4-12-10(6-9)11(16(18,19)20)7-14(26)24-12/h3-4,6-8,13,15,27H,2,5H2,1H3,(H,24,26)/t8-,13-,15-/m1/s1