InChI=1/C16H20BrN5O/c17-12-10-19-21-14(12)11-18-16(23)20-13-6-2-3-7-15(13)22-8-4-1-5-9-22/h2-3,6-7,10H,1,4-5,8-9,11H2,(H,19,21)(H2,18,20,23)/f/h18,20-21H C45B334BD3552F8A