InChI=1/C21H21N3O/c1-16(18-11-8-14-22-15-18)24(2)21(25)23-20-13-7-6-12-19(20)17-9-4-3-5-10-17/h3-16H,1-2H3,(H,23,25)/t16-/m1/s1/f/h23H 91F22AA74B816A2A