Task: Please create a description for a molecule based on its representation.
SMILES: O=C(O)[C@@H](O)C(=O)CO
Constraint: Answer the question with full sentences.
Result: The molecule is a ketoaldonic acid that is butyric acid carrying an oxo substituent at position 3 as well as two hydroxy substituents at positions 2 and 4 (the S-enantiomer). It is a ketoaldonic acid, a dihydroxy monocarboxylic acid and a 3-oxo monocarboxylic acid. It derives from a butyric acid. It is a conjugate acid of a (S)-2,4-dihydroxy-3-oxobutanoate. It is an enantiomer of a (R)-2,4-dihydroxy-3-oxobutanoic acid.
Task: Please create a {#text |!}description for a molecule{# based on its representation|!}.
{#Molecule |!}{SMILES__description}: {SMILES#}
Constraint: Answer the question with {#full|complete!} sentences.
Result: {description#}
(2S)-2,4-dihydroxy-3-oxobutanoicacid
The molecule is a ketoaldonic acid that is butyric acid carrying an oxo substituent at position 3 as well as two hydroxy substituents at positions 2 and 4 (the S-enantiomer). It is a ketoaldonic acid, a dihydroxy monocarboxylic acid and a 3-oxo monocarboxylic acid. It derives from a butyric acid. It is a conjugate acid of a (S)-2,4-dihydroxy-3-oxobutanoate. It is an enantiomer of a (R)-2,4-dihydroxy-3-oxobutanoic acid.