[{"from": "human", "value": "Create a molecule that satisfies the conditions outlined in the description. The molecule is an optically active 5-oxo-1,2-campholide having (-)-(1R,5R)-configuration. It is functionally related to a (-)-1,2-campholide. It is an enantiomer of a (+)-5-oxo-1,2-campholide."}, {"from": "gpt", "value": "[C][C@@][C][C][=Branch1][C][=O][C@@H1][Branch1][Branch2][C][Ring1][=Branch1][Branch1][C][C][C][C][C][=Branch1][C][=O][O][Ring1][N]"}]