InChI=1S/C21H21F3O9S/c1-34(30,31)13-8-6-11(7-9-13)10-2-4-12(5-3-10)18(21(22,23)24)33-20-16(27)14(25)15(26)17(32-20)19(28)29/h2-9,14-18,20,25-27H,1H3,(H,28,29)/t14-,15-,16+,17-,18-,20-/m0/s1