The molecule is a hydroxy monocarboxylic acid anion that is the conjugate base of (R)-3-[(R)-3-hydroxybutanoyloxy]butanoic acid It derives from a butyrate. It is a conjugate base of a (R)-3-[(R)-3-hydroxybutanoyloxy]butanoic acid.
(3R)-3-[(3R)-3-hydroxybutanoyl]oxybutanoate