InChI=1S/C21H22O11/c22-8-13(9-1-3-10(23)4-2-9)15(25)12-6-5-11(24)7-14(12)31-21-18(28)16(26)17(27)19(32-21)20(29)30/h1-7,13,16-19,21-24,26-28H,8H2,(H,29,30)