1-Piperidinecarboxylic acid, 4-[[[(1R,2S,5R)-6-hydroxy-7-oxo-1,6-diazabicyclo[3.2.1]oct-2-yl]carbonyl]amino]-, 1,1-dimethylethyl ester

1-Piperidinecarboxylic acid, 4-[[[(1R,2S,5R)-6-hydroxy-7-oxo-1,6-diazabicyclo[3.2.1]oct-2-yl]carbonyl]amino]-, 1,1-dimethylethyl ester