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