User: I'm looking for the SMILES of a molecule that can be described as:
The molecule is the conjugate base of trans-caffeic acid; major species at pH 7.3. It has a role as a human metabolite. It is a conjugate base of a trans-caffeic acid.
Assistant: This is a molecule that fits your description: O=C(O)/C=C/c1ccc([O-])c(O)c1
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#}
4-[(E)-2-carboxyethenyl]-2-hydroxyphenolate
The molecule is the conjugate base of trans-caffeic acid; major species at pH 7.3. It has a role as a human metabolite. It is a conjugate base of a trans-caffeic acid.