Task: Please create a description for a molecule.
SMILES: O=C1C=C/C(=C/C(=O)C(=O)O)O1
Constraint: Answer the question with complete sentences.
Result: The molecule is a 2-oxo monocarboxylic acid that is pyruvic acid substituted at position 3 by a 5-oxofuran-2-ylidene group. It is a 2-oxo monocarboxylic acid and a butenolide. It derives from a pyruvic acid. It is a conjugate acid of a 2-oxo-3-(5-oxofuran-2-ylidene)propanoate.
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#}
O=C1C=C/C(=C/C(=O)C(=O)O)O1
(3Z)-2-oxo-3-(5-oxofuran-2-ylidene)propanoic acid
The molecule is a 2-oxo monocarboxylic acid that is pyruvic acid substituted at position 3 by a 5-oxofuran-2-ylidene group. It is a 2-oxo monocarboxylic acid and a butenolide. It derives from a pyruvic acid. It is a conjugate acid of a 2-oxo-3-(5-oxofuran-2-ylidene)propanoate.