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