Synonyms: sodium(2r,5r,6r)-6-{[{[(8-hydroxy-2-oxo-2h-chromen-3-yl)carbonyl]amino}(phenyl)acetyl]amino}-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate;Tei-2012;Tei 2012;AC1Q1VUU;AR-1L5278;Sodium 6-(D-(-)-alpha-(8-hydroxycoumarin-3-carboxamide)phenylacetamide)penicillanate;4-Thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid, 6-(((((8-hydroxy-2-oxo-2H-1-benzopyran-3-yl)carbonyl)amino)phenylacetyl)amino)-3,3-dimethyl-7-oxo-, monosodium salt, (2S-(2alpha,5alpha,6beta(S*)))-