[{"from": "human", "value": "Describe this molecule. [C][C][Branch1][C][C][Branch1][O][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N][O]"}, {"from": "gpt", "value": "The molecule is the L-enantiomer of 4-hydroxyleucine. It is a 4-hydroxyleucine and a L-leucine derivative. It is an enantiomer of a 4-hydroxy-D-leucine."}]