InChI=1S/C21H32O8/c1-9-4-5-11-13(20(11,2)3)12-10(9)6-7-21(12,27)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)