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