InChI=1/C20H17BrN4O3/c21-17-11-16(25(27)28)8-9-18(17)24-20(26)19(15-6-2-1-3-7-15)23-13-14-5-4-10-22-12-14/h1-12,19,23H,13H2,(H,24,26)/t19-/m0/s1/f/h24H 1A299F5688354541