1-pyrrolidinecarboxylic acid, 2-(2,5-dihydro-5-oxo-2-furanyl)-, phenylmethyl ester InChI=1/C16H17NO4/c18-15-9-8-14(21-15)13-7-4-10-17(13)16(19)20-11-12-5-2-1-3-6-12/h1-3,5-6,8-9,13-14H,4,7,10-11H benzyl 2-(5-oxo-2,5-dihydrofuran-2-yl)pyrrolidine-1-carboxylate