InChI=1/C21H17BrN4O2/c1-2-27-15-9-5-13(6-10-15)19-18-17(12-3-7-14(22)8-4-12)16(11-23)20(24)28-21(18)26-25-19/h3-10,17H,2,24H2,1H3,(H,25,26)/t17-/m0/s1/f/h25H E19890B4107F8523