[{"from": "human", "value": "What can you tell me about this molecule? [C][=Branch1][C][=O][O-1].[K+1]"}, {"from": "gpt", "value": "The molecule is the potassium salt of formic acid. It has a role as a buffer. It is a potassium salt and a one-carbon compound. It is functionally related to a formic acid."}]