[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is the (S)-enantiomer of azetidine-2-carboxylic acid. It is an enantiomer of a (R)-azetidine-2-carboxylic acid."}, {"from": "gpt", "value": "[C][C][N][C@@H1][Ring1][Ring2][C][=Branch1][C][=O][O]"}]