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