InChI=1S/C21H26O10S/c1-11(22)18(29-5)13-8-14-19(17(10-13)28-4)30-20(21(14,2)23)12-6-7-15(16(9-12)27-3)31-32(24,25)26/h6-11,18,20,22-23H,1-5H3,(H,24,25,26)