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(2007/10/02)N,N'-bis(phenylacetyl)-L-cystine
(S)-3-Mercapto-2-((R)-3-mercapto-2-phenylacetylamino-propionylamino)-3-methyl-butyric acid methyl ester
D-penicillamine disulfide dimethyl ester
7-L-phenylacetylamino-4-D-methoxycarbonyl-3,3-dimethyl-6-oxoperhydro-1,2,5-dithiazocine