.ALPHA.-(4-(((2,4-DIMETHYLBENZOYL)OXY)METHYL)PHENYL)-1,3-DIHYDRO-1,3-DIOXO-2H-ISOINDOLE-2-PROPANOIC ACID, (.ALPHA.S)-
.alpha.-(4-(((2,4-dimethylbenzoyl)oxy)methyl)phenyl)-1,3-dihydro-1,3-dioxo-2h-isoindole-2-propanoic acid, (.alpha.s)-