InChI=1S/C18H34O6S/c1-2-3-4-8-11-14-17(24-25(21,22)23)15-12-9-6-5-7-10-13-16-18(19)20/h12,15,17H,2-11,13-14,16H2,1H3,(H,19,20)(H,21,22,23)/b15-12+