[pent-4-enoyl(prop-2-enyl)amino] acetate

[hex-5-enoyl(prop-2-enyl)amino] acetate

[(2-cyclopent-2-en-1-ylacetyl)-prop-2-enylamino] acetate

N-(1-methoxyprop-2-enyl)acetamide

[prop-2-enoxycarbonyl(prop-2-enyl)amino] acetate