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