InChI=1S/C21H25N3O3/c1-4-27-21(26)22-17-12-11-16-10-9-15-7-5-6-8-18(15)24(19(16)13-17)20(25)14-23(2)3/h5-8,11-13H,4,9-10,14H2,1-3H3,(H,22,26)