User: I'm looking for the SMILES of a molecule that can be described as:
The molecule is an angelica lactone and a butenolide. It derives from a but-2-en-4-olide. It is a tautomer of an alpha-angelica lactone.
Assistant: This is a molecule that fits your description: CC1C=CC(=O)O1
User: I'm {#searching|looking!} for the {SMILES__description} of a molecule that can be described {#by|as!}:
{description#}
Assistant: This is a molecule that fits {#your|this!} description: {SMILES#}
2-methyl-2H-furan-5-one
The molecule is an angelica lactone and a butenolide. It derives from a but-2-en-4-olide. It is a tautomer of an alpha-angelica lactone.