[{"from": "human", "value": "Describe this molecule. [C][C][C][C][=Branch1][C][=O][N][C@@H1][C][C][O][C][Ring1][Branch1][=O]"}, {"from": "gpt", "value": "The molecule is an N-acyl-L-homoserine lactone having butyryl as the acyl substituent."}]