InChI=1/C11H9BrN4O3/c1-16-10(19)13-7-3-2-5(12)4-6(7)11(16)8(17)14-9(18)15-11/h2-4H,1H3,(H,13,19)(H2,14,15,17,18)/t11-/m0/s1/f/h13-15H 7F9FFF1C5F6A7FC9