InChI=1S/C21H18O12/c22-10-5-13(25)12(24)4-9(10)15-6-11(23)8-2-1-7(3-14(8)32-15)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)