InChI=1S/C21H30O10/c1-8-7-29-11-6-21(5-4-10(22)9(2)20(21,3)17(26)12(8)11)31-19-15(25)13(23)14(24)16(30-19)18(27)28/h7,9-10,13-17,19,22-26H,4-6H2,1-3H3,(H,27,28)