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