InChI=1/C16H10BrN3O3/c17-13-3-1-2-11(9-13)8-12(10-18)16(21)19-14-4-6-15(7-5-14)20(22)23/h1-9H,(H,19,21)/b12-8+/f/h19H 4FFED0BC3C2164BF