InChI=1S/C21H18O11/c22-8-5-13-15(11(24)7-12(30-13)9-3-1-2-4-10(9)23)14(6-8)31-21-18(27)16(25)17(26)19(32-21)20(28)29/h1-7,16-19,21-23,25-27H,(H,28,29)