methyl 2-(2-oxopyrrolidin-1-yl)acetate; 2-Oxo-1-pyrrolidineacetic Acid Methyl Ester; (2-Oxopyrrolidin-1-yl)acetic Acid Methyl Ester; 1-(Methoxycarbonylmethyl)-2-pyrrolidone; 2-Ketopyrrolidine-1-acetic Acid Methyl Ester; Methyl 2-(2-Oxo-1-pyrrolidinyl)acetate; Methyl 2-Pyrrolidinon-1-ylacetate; Methyl 2-Pyrrolidone-1-acetate; (Methyl (2-Oxopyrrolidin-1-yl)acetate)