[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C@@H1][Branch1][O][C][N][C@@H1][Ring1][Branch1][C][=Branch1][C][=O][O][O]"}, {"from": "gpt", "value": "The molecule is l-Proline in which a hydrogen at the 4-position of the pyrrolidine ring is substituted by a hydroxy group (S-configuration). It has a role as a metabolite. It is a non-proteinogenic L-alpha-amino acid and a 4-hydroxyproline. It is a tautomer of a cis-4-hydroxy-L-proline zwitterion."}]