InChI=1S/C21H20O11/c22-9-2-3-10-12(7-9)30-14(15(10)24)6-8-1-4-11(23)13(5-8)31-21-18(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)