InChI=1S/C20H34O7S/c1-2-3-4-5-6-9-13-18(21)14-10-7-8-11-15-19(27-28(24,25)26)16-12-17-20(22)23/h7-8,11,15,19H,2-6,9-10,12-14,16-17H2,1H3,(H,22,23)(H,24,25,26)/b8-7+,15-11-