[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is a D-alanine derivative in which one of the methyl hydrogens of D-alanine has been replaced by an acetyl group. It is a 2-amino-4-oxopentanoic acid and a D-alanine derivative. It is a tautomer of a (R)-2-amino-4-oxopentanoic acid zwitterion."}, {"from": "gpt", "value": "[C][C][=Branch1][C][=O][C][C@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N]"}]