InChI=1S/C21H34O8/c1-9(2)11-5-7-21(4)8-6-12(22)10(3)13(21)17(11)28-20-16(25)14(23)15(24)18(29-20)19(26)27/h9,11-18,20,22-25H,3,5-8H2,1-2,4H3,(H,26,27)