InChI=1S/C21H30O10/c1-8-4-5-11(22)20(3)7-6-10-9(2)18(28)30-16(10)21(8,20)31-19-14(25)12(23)13(24)15(29-19)17(26)27/h9-16,19,22-25H,1,4-7H2,2-3H3,(H,26,27)