InChI=1S/C21H24O11/c1-8(2)17(31-21-16(26)14(24)15(25)19(32-21)20(27)28)13(23)12-10(29-3)6-4-9-5-7-11(22)30-18(9)12/h4-7,13-17,19,21,23-26H,1H2,2-3H3,(H,27,28)