[{"from": "human", "value": "Describe this molecule. [C][C][Branch1][C][C][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N][C][=C][C][=C][C][=C][Ring1][=Branch1]"}, {"from": "gpt", "value": "The molecule is a leucine derivative."}]