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