| 7-(((((2-(4-(((1-acetyl-5-thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic aci |
| 4-hydroxy-2- pyrrolidinyl)carbonyl)amino)phenyl)-1,4-dihydro-4-oxo-5-pyrimidiny |
| l)carbon yl)amino) phenylacetyl)amino)-3-(((1-(carboxymethyl)-1h-tetrazol-5-yl) |
| disodium salt, (6R-(6-alpha,7-beta(r*(2S*<4R*))))-thio)methyl)-8 -oxo |
| 7-(((((2-(4-(((1-acetyl-4-hydroxy-2-pyrrolidinyl)carbonyl)amino)phenyl)-1,4-dihydro-4-oxo-5-pyrimidi5-thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic aci |
