InChI=1S/C25H20N4O4/c1-15-7-3-6-10-21(15)26-25(31)20-14-17-8-4-5-9-19(17)23(24(20)30)28-27-22-12-11-18(29(32)33)13-16(22)2/h3-14,27H,1-2H3,(H,26,31)/b28-23-