User: I'm searching for the SMILES of a molecule that can be described by:
The molecule is a monocarboxylic acid anion that is the conjugate base of 4-carboxymethyl-3-methylbut-2-en-1,4-olide; major species at pH 7.3. It is a conjugate base of a 4-carboxymethyl-3-methylbut-2-en-1,4-olide.
Assistant: This is a molecule that fits this description: CC1=CC(=O)OC1CC(=O)[O-]
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#}
CC1=CC(=O)OC1CC(=O)[O-]
2-(3-methyl-5-oxo-2H-furan-2-yl)acetate
The molecule is a monocarboxylic acid anion that is the conjugate base of 4-carboxymethyl-3-methylbut-2-en-1,4-olide; major species at pH 7.3. It is a conjugate base of a 4-carboxymethyl-3-methylbut-2-en-1,4-olide.