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(2012/11/07)3-cyano-4-oxopyrrolidine-1-carboxylic acid tert-butyl ester
tert-butyl 3-(tert-butoxycarbonyl)aminomethyl-4-oxopyrrolidine-1-carboxylate
tert-butyl 3-(tert-butoxycarbonyl)aminomethyl-4-(hydroxyimino)pyrrolidine-1-carboxylate
7-chloro-1-cyclopropyl-6-fluoro-4-oxo-1,4-dihydro-[1,8]naphthyridine-3-carboxylic acid
6-chloroverataldehyde