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