InChI=1S/C21H24O10/c1-9(2)4-5-10-8-11-6-7-12(22)29-16(11)19(28-3)17(10)30-21-15(25)13(23)14(24)18(31-21)20(26)27/h4,6-8,13-15,18,21,23-25H,5H2,1-3H3,(H,26,27)