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