User: I'm looking for the SMILES of a molecule that can be described as:
The molecule is a polar amino acid zwitterion restulting from the transfer of a proton from the carboxy group to the alpha-amino group of D-histidine. The major species at pH 7.3. It is a tautomer of a D-histidine.
Assistant: This is a molecule that fits your description: [NH3+][C@H](Cc1cnc[nH]1)C(=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#}
[NH3+][C@H](Cc1cnc[nH]1)C(=O)[O-]
C1=C(NC=N1)C[C@H](C(=O)[O-])[NH3+]
(2R)-2-azaniumyl-3-(1H-imidazol-5-yl)propanoate
The molecule is a polar amino acid zwitterion restulting from the transfer of a proton from the carboxy group to the alpha-amino group of D-histidine. The major species at pH 7.3. It is a tautomer of a D-histidine.