InChI=1S/C21H25N3O2/c1-21(14-19(25)24(2)20(22)23-21)11-10-15-6-4-7-16(12-15)17-8-5-9-18(13-17)26-3/h4-9,12-13H,10-11,14H2,1-3H3,(H2,22,23)/t21-/m1/s1