InChI=1/C21H17BrN2O3/c1-14-4-6-15(7-5-14)20(25)24-19(13-18-3-2-12-27-18)21(26)23-17-10-8-16(22)9-11-17/h2-13H,1H3,(H,23,26)(H,24,25)/b19-13+/f/h23-24H E4779EC9E9D9AB56