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