InChI=1S/C20H34O9/c21-12-11-14(22)10-8-6-4-2-1-3-5-7-9-13-28-20-17(25)15(23)16(24)18(29-20)19(26)27/h12,15-18,20,23-25H,1-11,13H2,(H,26,27)