InChI=1S/C19H15FN2O8S/c1-2-6-21-13-8-12(11(20)7-15(13)29-9-16(21)23)22-18(24)10-4-3-5-14(17(10)19(22)25)30-31(26,27)28/h1,7-8,14H,3-6,9H2,(H,26,27,28)