InChI=1/C20H13Br2NO3/c21-15-6-4-14(5-7-15)17(24)10-3-13-1-8-16(9-2-13)23-20(25)18-11-12-19(22)26-18/h1-12H,(H,23,25)/b10-3+/f/h23H 3E3B9B93F1907997