InChI=1S/C21H20O11/c22-9-3-1-8(2-4-9)7-12-13(23)10-5-6-11(14(24)18(10)30-12)31-21-17(27)15(25)16(26)19(32-21)20(28)29/h1-6,12,15-17,19,21-22,24-27H,7H2,(H,28,29)