InChI=1S/C15H23N3O3/c1-4-18(5-2)9-8-16-15(21)12-6-7-13(14(20)10-12)17-11(3)19/h6-7,10,20H,4-5,8-9H2,1-3H3,(H,16,21)(H,17,19)