InChI=1S/C21H18O11/c22-9-2-3-10-12(24)7-13(30-14(10)6-9)8-1-4-11(23)15(5-8)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)