InChI=1/C15H13BrN4O/c16-10-3-1-2-9(4-10)7-18-14-6-13-11(5-12(14)17)15(21)20-8-19-13/h1-6,8,18H,7,17H2,(H,19,20,21)/f/h20H D61FCB965D89E54A