(6R,7R)-7-(2-((difluoromethyl)thio)acetamido)-3-(hydroxymethyl)-7-methoxy-8-oxo-5-oxa-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, sodium salt
(6R,7R)-7-(2-((difluoromethyl)thio)acetamido)-3-(hydroxymethyl)-7-methoxy-8-oxo-5-oxa-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, sodium salt