Chemical Name: (2S,5R,6R)-6-[(2R)-2-[(2Ξ)-2-[(2Ξ,4S)-4-carboxy-5,5-dimethyl-1,3-thiazolidin-2-yl]-2-[(2R)-2-(4-ethyl-2,3-dioxopiperazine-1-carboxamido)-2-phenylacetamido]acetamido]-2-phenylacetamido]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid (as per EP)