InChI=1S/C20H32O8S/c1-2-3-6-9-16(27-29(24,25)26)11-14-19-15-12-17(21)20(19,28-19)13-8-5-4-7-10-18(22)23/h11,14,16H,2-10,12-13,15H2,1H3,(H,22,23)(H,24,25,26)/b14-11+