(Pivaloyloxy)methyl (2S,5R,6R)-6-((azepan-1-ylmethylene)amino)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate hydrochloride

(Pivaloyloxy)methyl (2S,5R,6R)-6-((azepan-1-ylmethylene)amino)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate hydrochloride