InChI=1S/C26H20N2O4/c1-27-23-15-12-19(9-5-8-18-6-3-2-4-7-18)16-22(23)24(29)28(26(27)32)17-20-10-13-21(14-11-20)25(30)31/h2-4,6-7,10-16H,8,17H2,1H3,(H,30,31)