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