((2-(1-((R)-2-Amino-2-phenylacetamido)-2-(((1S)-2-(((2S,6R)-2-(((((2S,5S)-3,3-dimethyl-4,4-dioxido-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carbonyl)oxy)methoxy)carbonyl)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptan-6-yl)amino)-2-oxo-1-phenylethyl)amino)-2-oxoethyl)-5,5-dimethyl-3-nitrosothiazolidine-4-carbonyl)oxy)methyl (2S,5S)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate 4,4-dioxide
