InChI=1S/C21H32O8/c1-8-9-5-6-21(4,12(9)13-10(7-11(8)22)20(13,2)3)29-19-16(25)14(23)15(24)17(28-19)18(26)27/h10-17,19,22-25H,5-7H2,1-4H3,(H,26,27)