InChI=1/C15H23N3O2/c1-11(18-7-3-2-4-8-18)10-17-14-9-12(16)5-6-13(14)15(19)20/h5-6,9,11,17H,2-4,7-8,10,16H2,1H3,(H,19,20)/t11-/m1/s1/f/h18H D386F1CC1D2F3999