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