InChI=1S/C20H34O8/c1-2-3-4-5-6-7-8-9-10-11-14(22)13(12-21)18-16(24)15(23)17(25)19(28-18)20(26)27/h12-13,15-19,23-25H,2-11H2,1H3,(H,26,27)