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