InChI=1S/C20H22O11S/c1-20(2,27)9-16(31-32(28,29)30)18-15(25)8-14(24)17(19(18)26)12(22)6-4-10-3-5-11(21)7-13(10)23/h3-8,16,21,23-27H,9H2,1-2H3,(H,28,29,30)