1-Carbamoylmethyl-3-aminomethylenepyrrolidine-2,4-dione hydrate 1-Pyrrolidineacetamide, 3-(aminomethylene)-2,4-dioxo-, hydrate 141581-88-6 3-(Aminomethylene)-2,4-dioxo-1-pyrrolidineacetamide hydrate