InChI=1S/C20H32O9S/c1-2-3-6-9-15(29-30(25,26)27)12-13-18-16(17(21)14-20(24)28-18)10-7-4-5-8-11-19(22)23/h4,7,12-13,15-16,18,20,24H,2-3,5-6,8-11,14H2,1H3,(H,22,23)(H,25,26,27)/b7-4-,13-12+