InChI=1S/C21H18O11/c22-10-4-5-12-14(15(10)24)11(23)7-13(31-12)8-2-1-3-9(6-8)30-21-18(27)16(25)17(26)19(32-21)20(28)29/h1-7,16-19,21-22,24-27H,(H,28,29)