1-(2-(2,3-DIHYDRO-5-BENZOFURANYL)-2-OXOETHYL)-.ALPHA.,.ALPHA.-DIPHENYL-3-PYRROLIDINEACETAMIDE, (3S)-
1-(2-(2,3-dihydro-5-benzofuranyl)-2-oxoethyl)-.alpha.,.alpha.-diphenyl-3-pyrrolidineacetamide, (3s)-