1-Ethoxycarbonylmethyl-3-(beta-phenylisopropyl)aminomethylenepyrrolidine-2,4-dione 1-Pyrrolidineacetic acid, 2,4-dioxo-3-(((1-methyl-2-phenylethyl)amino)methylene)-, ethyl ester 141581-93-3 Ethyl 2,4-dioxo-3-(((1-methyl-2-phenylethyl)amino)methylene)-1-pyrrolidineacetate