InChI=1/C14H14BrN5O/c1-8-9(2)17-14-18-13(19-20(14)12(8)21)16-7-10-3-5-11(15)6-4-10/h3-6H,7H2,1-2H3,(H2,16,17,18,19)/f/h16-17H 97A4EE6BAFFDA61B