InChI=1S/C20H34O9S/c1-2-3-4-8-15(29-30(26,27)28)10-11-16-17(19(23)13-18(16)22)12-14(21)7-5-6-9-20(24)25/h10-11,15-19,22-23H,2-9,12-13H2,1H3,(H,24,25)(H,26,27,28)/b11-10+