InChI=1/C16H17BrN4O2/c1-10-5-2-3-6-11(10)12(19-16(18)23)9-15(22)21-14-8-4-7-13(17)20-14/h2-8,12H,9H2,1H3,(H3,18,19,23)(H,20,21,22)/t12-/m1/s1/f/h19,21H,18H2 6A6341D512A82813