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(1994)(6R,7R)-8-Oxo-7-(2-phenoxy-acetylamino)-3-(tetrahydro-furan-2-yl)-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid tert-butyl ester
(RS)-2-Chloroacetyltetrahydrofuran
tetrahydro-2-furancarboxylic acid
tetrahydrofuran-2-carbonyl chloride
(6R,7R)-7-Amino-8-oxo-3-(S)-tetrahydro-furan-2-yl-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid tert-butyl ester