Diethyl 2-[(dimethylamino)methylidene]propane-1,3-dioateDiethyl 2-[(dimethylamino)methylene]malonatediethyl 2-[(dimethylamino)methylidene]malonate二甲氨亚甲基丙二酸二乙酯Diethyl dimethylaminomethylenemalonateEthyl 3-(dimethylamino)-2-(ethoxycarbonyl)propenoateDiethyl 2-((diMethylaMino)Methylene)Malonate