InChI=1/C20H19BrN4O/c21-16-10-8-14(9-11-16)17-13-18(15-5-2-1-3-6-15)25-20(22-17)23-19(24-25)7-4-12-26/h1-3,5-6,8-11,18,26H,4,7,12-13H2/t18-/m0/s1 BB800FFE50218493