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