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