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