InChI=1S/C14H16BrN4O3/c1-18-5-9(19(2)14(18)16)11-6-3-7(15)10(20)4-8(6)17-12(11)13(21)22/h3-4,9,17,20H,5,16H2,1-2H3,(H,21,22)/t9-/m0/s1