InChI=1S/C20H32O8S/c1-2-3-6-9-16(28-29(25,26)27)13-12-15-14-18(21)20(24)17(15)10-7-4-5-8-11-19(22)23/h12-13,16,18,21H,2-11,14H2,1H3,(H,22,23)(H,25,26,27)/b13-12+