User: I'm looking for the SMILES of a molecule that can be described by:
The molecule is a dipeptide zwitterion obtained by transfer of two protons from the carboxy to the amino and guanidino groups of beta-Asp-Arg; major species at pH 7.3. It is a tautomer of a beta-Asp-Arg.
Assistant: This is a molecule that fits your description: NC(N)=[NH+]CCC[C@H](NC(=O)C[C@H]([NH3+])C(=O)[O-])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#}
NC(N)=[NH+]CCC[C@H](NC(=O)C[C@H]([NH3+])C(=O)[O-])C(=O)[O-]
(2S)-2-[[(3S)-3-azaniumyl-3-carboxylatopropanoyl]amino]-5-(diaminomethylideneazaniumyl)pentanoate
The molecule is a dipeptide zwitterion obtained by transfer of two protons from the carboxy to the amino and guanidino groups of beta-Asp-Arg; major species at pH 7.3. It is a tautomer of a beta-Asp-Arg.