InChI=1S/C22H25N3O3/c1-5-21(2,3)18-15(14-9-6-7-10-16(14)23-18)13-17-19(26)25-12-8-11-22(25,28-4)20(27)24-17/h5-7,9-10,13,23H,1,8,11-12H2,2-4H3,(H,24,27)/b17-13-