InChI=1S/C21H22O11/c1-8(9-2-4-10(22)5-3-9)15(25)14-12(23)6-11(7-13(14)24)31-21-18(28)16(26)17(27)19(32-21)20(29)30/h2-8,16-19,21-24,26-28H,1H3,(H,29,30)