InChI=1/C21H21N3O2/c25-21(23-26)10-9-15-5-7-16(8-6-15)13-24-12-11-18-17-3-1-2-4-19(17)22-20(18)14-24/h1-10,22,26H,11-14H2,(H,23,25)/b10-9+/f/h23H D21258532745543C