tert-Butyl 6-oxo-2,7-diaza-spiro[4.4]nonane-2-carboxyl-ate.
In the title mol-ecule, C(12)H(20)N(2)O(3), both five-membered rings are in envelope conformations. In the crystal, N-H⋯O hydrogen bonds link the mol-ecules into chains along [010].
Microscale Science Institute , Weifang University, Weifang 261061,  People's Republic of China.
Jie
J
Yang