4-CARBOXY-5,5-DIMETHYL-.ALPHA.-((2-PHENOXYACETYL)AMINO)-2-THIAZOLIDINEACETIC ACID, (.ALPHA.R,2R,4S)-
4-carboxy-5,5-dimethyl-.alpha.-((2-phenoxyacetyl)amino)-2-thiazolidineacetic acid, (.alpha.r,2r,4s)-