[{"from": "human", "value": "Describe this molecule. [C][C@@H1][Branch2][Ring1][#C][C][C][=Branch1][C][=O][N][C][=Branch1][C][=O][C][=C][N][C][=Branch1][=Branch1][=C][C][Ring1][=Branch1][=O][C][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is a member of the class of 4-pyridones that is aspernigrin A (2-benzyl-4-pyridone-5-carboxamide) in which the nitrogen of the carboxamide has been acylated by a (3S)-3-carboxybutanoyl group. It has been isolated from Aspergillus niger and several other Aspergillus species. It has a role as an Aspergillus metabolite. It is a dicarboximide, a monocarboxylic acid and a member of 4-pyridones. It is functionally related to an aspernigrin A."}]