InChI=1S/C21H34O8/c1-10(2)12-6-8-21(9-22)7-4-5-11(3)13(21)17(12)28-20-16(25)14(23)15(24)18(29-20)19(26)27/h10,12-18,20,22-25H,3-9H2,1-2H3,(H,26,27)