InChI=1S/C22H18O13/c1-33-10-4-7(34-22-19(30)17(28)18(29)20(35-22)21(31)32)3-9-11(10)15(26)12-8(14(9)25)2-6(5-23)13(24)16(12)27/h2-5,17-20,22,24,27-30H,1H3,(H,31,32)