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