137427-85-1 3-Carbethoxy-1-(dipropylacetyl)-4-phenyl-2-pyrrolidinone 3-Pyrrolidinecarboxylic acid, 2-oxo-1-(1-oxo-2-propylpentyl)-4-phenyl-, ethyl ester Ethyl 2-oxo-1-(1-oxo-2-propylpentyl)-4-phenyl-3-pyrrolidinecarboxylate