(2RS,4S)-5,5-dimethyl-2-[[(2-phenoxyacetyl)amino]-methyl]-1,3-thiazolidine-4-carboxylic acid; Penilloic Acids Of Phenoxymethylpenicillin; (4S)-5,5-Dimethyl-2-((2-phenoxyacetamido)methyl)thiazolidine-4-carboxylic Acid; 4-Thiazolidinecarboxylic acid, 5,5-dimethyl-2-[[(2-phenoxyacetyl)amino]methyl]-, (4S); Penilloic Acid V