InChI=1S/C21H34O8/c1-10-5-4-7-21(3)8-6-12(14(22)13(10)21)11(2)9-28-20-17(25)15(23)16(24)18(29-20)19(26)27/h11-18,20,22-25H,1,4-9H2,2-3H3,(H,26,27)