InChI=1S/C22H18O13/c1-31-12-2-6-10(4-8(12)23)32-18-7-3-13(9(24)5-11(7)33-21(30)14(6)18)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)