InChI=1S/C21H18O12/c22-10-4-3-9(14(24)15(10)25)13-6-11(23)8-2-1-7(5-12(8)32-13)31-21-18(28)16(26)17(27)19(33-21)20(29)30/h1-6,16-19,21-22,24-28H,(H,29,30)