InChI=1S/C19H20O12S/c20-3-5-28-13-2-1-10(7-14(13)29-6-4-21)18-19(31-32(25,26)27)17(24)16-12(23)8-11(22)9-15(16)30-18/h1-2,7-9,18-23H,3-6H2,(H,25,26,27)