diethyl 2-(ethoxymethylidene)propanedioate; Diethyl (ethoxymethylidene)propanedioate; 2-(Ethoxymethylene)propanedioic Acid 1,3-Diethyl Ester; (Ethoxymethylene)malonic Acid Diethyl Ester; (Ethoxymethylene)propanedioic Acid Diethyl Ester; Diethyl[(ethyloxy)methylidene]propanedioate; Ethyl 3-Ethoxy-2-(ethoxymethylene)-3-oxopropanoate