The molecule is the conjugate base of (2-chloro-5-oxo-2,5-dihydro-2-furyl)acetic acid; major species at pH 7.3. It is a conjugate base of a (2-chloro-5-oxo-2,5-dihydro-2-furyl)acetic acid.
2-(2-chloro-5-oxofuran-2-yl)acetate