(6R,7R)-7-(2-(3,5-dichloro-4-oxopyridin-1(4H)-yl)acetamido)-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
(6R,7R)-7-(2-(3,5-dichloro-4-oxopyridin-1(4H)-yl)acetamido)-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid