InChI=1S/C17H24N2O3/c1-12(2)9-16(18-13(3)21)17(22)19-15(11-20)10-14-7-5-4-6-8-14/h4-8,11-12,15-16H,9-10H2,1-3H3,(H,18,21)(H,19,22)/t15-,16-/m0/s1