[{"from": "human", "value": "Create a molecule that satisfies the conditions outlined in the description. The molecule is an L-valine derivative in which one of the amino hydrogens of L-valine has been replaced by an acetyl group. It is a N-acetyl-L-amino acid and a L-valine derivative. It is a conjugate acid of a N-acetyl-L-valinate."}, {"from": "gpt", "value": "[C][C][Branch1][C][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N][C][=Branch1][C][=O][C]"}]