a group of antibiotics used to treat bacterial infections by hindering the construction of the bacterial cell wall
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TRICHLOROETHYL 6-(PHENYLACETAMIDO)PENICILLANATE S-OXIDE
(2S,6R)-6-((S)-1-Hydroxy-ethyl)-3,3-dimethyl-7-oxo-6-phenylselanyl-4-thia-1-aza-bicyclo[3.2.0]heptane-2-carboxylic acid benzyl ester