InChI=1S/C19H16O9S/c20-12(10-27-29(24,25)26)9-14(11-5-2-1-3-6-11)16-17(22)13-7-4-8-15(21)18(13)28-19(16)23/h1-8,14,21,23H,9-10H2,(H,24,25,26)