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Y	Z

H-d-ala-gly-gly-oh

H-gly-his-gly-oh

Z-pro-leu-gly-oet

(2-Hydroxy-2-p-tolyl-ethyl)-carbamic acid tert-butyl ester

(4R,5s)-(+)-4-methyl-5-phenyl-2-oxazolidinone

(S)-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid methyl ester hydrochloride

H-gly-dl-leu-dl-ala-oh

4-(2-Methoxy-phenoxy)-benzaldehyde

4-(3,4-Dichloro-phenoxy)-benzaldehyde

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