InChI=1S/C20H20O10S/c1-9(2)3-4-11-14(22)7-15-16(17(11)23)18(24)12(8-29-15)10-5-6-13(21)20(19(10)25)30-31(26,27)28/h3,5-7,12,21-23,25H,4,8H2,1-2H3,(H,26,27,28)