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N-(p-cyanobenzylidene)-p-propoxyaniline

N-(phenyl)cyanoformamide

N-(phenylacetyl)-l-phenylalanine

N-(phenylpropyl)-2,4-dichloroaniline

N-(phthalimidomethyl)acrylamide

N-(p-toluenesulfonyl)-3-pyrroline

N-(p-toluenesulfonyl)-l-phenylalanine

N-(pyrid-2-yl)piperidine-4-carboxylic acid

N-(pyridine-2-carbonyl)-l-proline

N-(pyridine-3-carbonyl)-l-proline