[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a monocarboxylic acid amide that is the N-methyl derivative of acetamide. It has a role as a metabolite. It is a member of acetamides and a monocarboxylic acid amide. It is functionally related to an acetamide."}, {"from": "gpt", "value": "[C][C][=Branch1][C][=O][N][C]"}]