InChI=1S/C19H15NO10S/c21-13(10-29-31(26,27)28)9-15(11-5-7-12(8-6-11)20(24)25)17-18(22)14-3-1-2-4-16(14)30-19(17)23/h1-8,15,22H,9-10H2,(H,26,27,28)