[{"from": "human", "value": "Could you provide a description of this molecule? [C][C][Branch1][C][C][C@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1]"}, {"from": "gpt", "value": "The molecule is a D-alpha-amino acid zwitterion that is D-valine 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-valine."}]