[{"from": "human", "value": "Describe this molecule. [C][C][Branch2][Ring1][Ring1][C][C][C][=Branch1][C][=O][O][C][Ring1][#Branch1][Branch1][=Branch1][C][C][Ring1][Branch2][=O][C][C]"}, {"from": "gpt", "value": "The molecule is a bridged compound that is 1,2-campholide substituted at position 5 by an oxo group. It is a ketolactone and a bridged compound. It is functionally related to a 1,2-campholide."}]