InChI=1/C20H26BrN3O/c1-20(2,3)15-6-4-14(5-7-15)19(25)23-17-8-10-18(11-9-17)24-13-16(21)12-22-24/h8-15H,4-7H2,1-3H3,(H,23,25)/f/h23H 1B4D9BB282E99ABF