InChI=1/C13H15BrN4O/c1-8-6-10(14)4-5-11(8)15-13(19)16-12-7-9(2)17-18(12)3/h4-7H,1-3H3,(H2,15,16,19)/f/h15-16H 514EF1E3CCA26BF7