InChI=1S/C20H27N3O3/c1-13-9-19(3,4)12-20(10-13)17(25)23(18(26)22-20)11-16(24)21-15-8-6-5-7-14(15)2/h5-8,13H,9-12H2,1-4H3,(H,21,24)(H,22,26)