User: I'm looking for the SMILES of a molecule that can be described as:
The molecule is an amino acid zwitterion obtained by transfer of a proton from the amino to the carboxy group of (2S)-2-acetamido-4-aminobutanoic acid; major species at pH 7.3. It is a tautomer of a (2S)-2-acetamido-4-aminobutanoic acid.
Assistant: This is a molecule that fits this description: CC(=O)N[C@@H](CC[NH3+])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#}
(2S)-2-acetamido-4-azaniumylbutanoate
The molecule is an amino acid zwitterion obtained by transfer of a proton from the amino to the carboxy group of (2S)-2-acetamido-4-aminobutanoic acid; major species at pH 7.3. It is a tautomer of a (2S)-2-acetamido-4-aminobutanoic acid.