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