InChI=1S/C21H34O8/c1-11-5-4-6-12-7-8-13(9-21(11,12)10-22)20(2,3)29-19-16(25)14(23)15(24)17(28-19)18(26)27/h6,11,13-17,19,22-25H,4-5,7-10H2,1-3H3,(H,26,27)