allyl (2S,4S)-2-(3-(ethoxycarbonyl)-4-(hydroxyimino)pyrrolidine-1-carbonyl)-4-mercaptopyrrolidine-1-carboxylate

(4R,5S,6S)-3-((3S,5S)-1-Allyloxycarbonyl-5-{3-[(Z)-methoxyimino]-pyrrolidine-1-carbonyl}-pyrrolidin-3-ylsulfanyl)-6-((R)-1-hydroxy-ethyl)-4-methyl-7-oxo-1-aza-bicyclo[3.2.0]hept-2-ene-2-carboxylic acid allyl ester

(4R,5S,6S)-3-((3S,5S)-1-Allyloxycarbonyl-5-{3-ethoxycarbonyl-4-[(Z)-hydroxyimino]-pyrrolidine-1-carbonyl}-pyrrolidin-3-ylsulfanyl)-6-((R)-1-hydroxy-ethyl)-4-methyl-7-oxo-1-aza-bicyclo[3.2.0]hept-2-ene-2-carboxylic acid allyl ester