[{"from": "human", "value": "What can you tell me about this molecule? [C][O][S][=Branch1][C][=O][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is an alkyl sulfate that is the monomethyl ester of sulfuric acid. It is a one-carbon compound and an alkyl sulfate. It is a conjugate acid of a methyl sulfate(1-)."}]