User: I'm looking for the SMILES of a molecule that can be described as:
The molecule is a monocarboxylic acid anion that is the conjugate base of 3-mercapto-2-mercaptomethylpropanoic acid; major species at pH 7.3. It is a conjugate base of a 3-mercapto-2-mercaptomethylpropanoic acid.
Assistant: This is a molecule that fits your description: O=C([O-])C(CS)CS
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#}
3-sulfanyl-2-(sulfanylmethyl)propanoate
The molecule is a monocarboxylic acid anion that is the conjugate base of 3-mercapto-2-mercaptomethylpropanoic acid; major species at pH 7.3. It is a conjugate base of a 3-mercapto-2-mercaptomethylpropanoic acid.