InChI=1S/C21H20O11/c22-6-7-4-9-12(10(23)5-7)15(25)13-8(14(9)24)2-1-3-11(13)31-21-18(28)16(26)17(27)19(32-21)20(29)30/h1-5,15-19,21-23,25-28H,6H2,(H,29,30)