InChI=1/C20H21N3O2/c1-11-8-12(2)18-15(9-11)16-10-13(3)22-23(16)20(21-18)14-6-5-7-17(25-4)19(14)24/h5-10,20-21,24H,1-4H3/t20-/m0/s1 EA158C756CF50ABE