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