| 2-oxo-1-(1-oxo-2-propylpentyl)-4-phenyl-3-pyrrolidinecarboxylic aci ethyl e |
| 3-carbethoxy-1-(dipropylacetyl)-4-phenyl-2-pyrrolidinone |
| ethyl 2-oxo-1-(1-oxo-2-propylpentyl)-4-phenyl-3-pyrrolidinecarboxylate |
| 2-oxo-1-(1-oxo-2-propylpentyl)-4-phenyl-3-pyrrolidinecarboxylic aci ethyl ester |
