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Y	Z

2-(tert-Butoxycarbonyloxyimino)-2-phenylacetonitrile

(4S,5R)-3-(tert-Butoxycarbonyl)-2,2-dimethyl-4-phenyloxazolidine-5-carboxylic acid

2-(tert-Butoxycarbonyl)-2,7-diazaspiro[3.5]nonane

(Z)-2-(2-tert-Butoxycarbonylaminothiazol-4-yl)-2-pentenoic acid

2-(2-tert-Butoxycarbonylaminothiazol-4-yl)-2-pentenedioic acid

Trimorpholinophosphine oxide

(2R,3S)-3-(tert-Butoxycarbonyl)amino-1,2-epoxy-4-phenylbutane

N-(tert-Butoxycarbonyl)-2-aminoacetonitrile

N-(tert-Butoxycarbonyl)-L-alanine

(3R,4S)-1-tert-Butoxycarbonyl-3-acetoxy-4-phenyl-2-azetidinone