Task: Please give me a SMILES based on the text description below.
Description: The molecule is a D-alpha-amino acid zwitterion that is D-allothreonine in which a proton has been transferred from the carboxy group to the amino group. It is the major species at pH 7.3. It is a tautomer of a D-allothreonine.
Result: C[C@@H](O)[C@@H]([NH3+])C(=O)[O-]
Task: Please {#give me|create|generate!} a {#molecule |!}{SMILES__description} based on the {#text |!}description{# below|!}.
Description: {description#}
Result: {SMILES#}
(2R,3R)-2-azaniumyl-3-hydroxybutanoate
The molecule is a D-alpha-amino acid zwitterion that is D-allothreonine in which a proton has been transferred from the carboxy group to the amino group. It is the major species at pH 7.3. It is a tautomer of a D-allothreonine.