[{"from": "human", "value": "Describe this molecule. [C][C][=Branch1][C][=O][O][C][Branch1][Ring1][C][=C][C][#C][C][#C][C][C][C][Branch1][Ring2][O][Ring1][Ring1][C][C][C][C][C][C][=C]"}, {"from": "gpt", "value": "The molecule is a carboxylic ester."}]