[{"from": "human", "value": "What can you tell me about this molecule? [C][C][C][C][C][C][C][=Branch1][C][=O][O][C][Ring1][=Branch1]"}, {"from": "gpt", "value": "The molecule is a butan-4-olide that is gamma-butyrolactone substituted by a butyl group at position 4. It has a role as a metabolite. It is functionally related to a gamma-butyrolactone."}]