InChI=1S/C19H16O9S/c1-24-19-12(3-5-15-13(19)6-7-25-15)14(20)9-17(28-29(21,22)23)11-2-4-16-18(8-11)27-10-26-16/h2-8,17H,9-10H2,1H3,(H,21,22,23)