SMILES: C([C@H](C=O)O)C(=O)[O-]
Description: The molecule is an aldehydic acid anion resulting from the deprotonation of the carboxy group of (R)-3-hydroxy-4-oxobutanoic acid. It is an oxo monocarboxylic acid anion and an aldehydic acid anion. It is a conjugate base of a (R)-3-hydroxy-4-oxobutanoic acid.