InChI=1S/C21H32O8/c1-20(2)11-5-4-9(8-22)10-6-7-21(3,12(10)13(11)20)29-19-16(25)14(23)15(24)17(28-19)18(26)27/h11-17,19,22-25H,4-8H2,1-3H3,(H,26,27)