User: I'm searching for the SMILES of a molecule that can be described as:
The molecule is a zwitterion obtained by transfer of a proton from the carboxy group to the nitrogen alpha to the carboxy group. The major species at pH 7.3. It is a tautomer of an ectoine.
Assistant: This is a molecule that fits this description: CC1=[NH+]CC[C@@H](C(=O)[O-])N1
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#}
(6S)-2-methyl-1,4,5,6-tetrahydropyrimidin-3-ium-6-carboxylate
The molecule is a zwitterion obtained by transfer of a proton from the carboxy group to the nitrogen alpha to the carboxy group. The major species at pH 7.3. It is a tautomer of an ectoine.