InChI=1S/C17H24N2O3/c1-2-3-9-15(17(21)22)19-11-10-18-14(16(19)20)12-13-7-5-4-6-8-13/h4-8,14-15,18H,2-3,9-12H2,1H3,(H,21,22)/t14-,15+/m1/s1