InChI=1/C18H16F6N2O2/c1-28-14-9-7-12(8-10-14)11-25-16(17(19,20)21,18(22,23)24)26-15(27)13-5-3-2-4-6-13/h2-10,25H,11H2,1H3,(H,26,27)/f/h26H F709821DD6B42F2F