[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is an O-acetylhomoserine. It is functionally related to a D-homoserine. It is an enantiomer of an O-acetyl-L-homoserine."}, {"from": "gpt", "value": "[C][C][=Branch1][C][=O][O][C][C][C@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N]"}]