3-oxopenta-1,4-dien-2-yl acetate;(1-methylene-2-oxo-but-3-enyl) acetate;acetic acid (1-methylene-2-oxobut-3-enyl) ester;acetic acid (2-keto-1-methylene-but-3-enyl) ester;3-oxopenta-1,4-dien-2-yl ethanoate
3-oxopenta-1,4-dien-2-yl acetate