(6R,7S)-3-((carbamoyloxy)methyl)-7-methoxy-7-((S)-2-methoxy-2-(thiophen-2-yl)acetamido)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
(6R,7S)-3-((carbamoyloxy)methyl)-7-methoxy-7-((S)-2-methoxy-2-(thiophen-2-yl)acetamido)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid