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