[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a N-acetyl-L-amino acid, a N-acylpyrrolidine, a pyrrolidinemonocarboxylic acid and a L-proline derivative."}, {"from": "gpt", "value": "[C][C][=Branch1][C][=O][N][C][C][C][C@H1][Ring1][Branch1][C][=Branch1][C][=O][O]"}]