InChI=1S/C20H17BrN4O2/c1-12-11-23-20-16(6-8-18(26)27)24-19(15-4-2-3-9-22-15)14-10-13(21)5-7-17(14)25(12)20/h2-5,7,9-11,16H,6,8H2,1H3,(H,26,27)/t16-/m0/s1