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