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