User: I'm looking for the SMILES of a molecule that can be described as:
The molecule is an amino acid zwitterion obtained from 4-oxoproline by transfer of a proton from the alpha-carboxy group to the amino group; major species at pH 7.3. It is a tautomer of a 4-oxoproline.
Assistant: This is a molecule that fits this description: O=C1C[NH2+]C(C(=O)[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-oxopyrrolidin-1-ium-2-carboxylate
The molecule is an amino acid zwitterion obtained from 4-oxoproline by transfer of a proton from the alpha-carboxy group to the amino group; major species at pH 7.3. It is a tautomer of a 4-oxoproline.