InChI=1S/C12H18F9N2O4S/c1-23(2,7-4-8(24)25)6-3-5-22-28(26,27)12(20,21)10(15,16)9(13,14)11(17,18)19/h22H,3-7H2,1-2H3,(H-,24,25,26)