[{"from": "human", "value": "Could you provide a description of this molecule? [C][=Branch1][#Branch2][=C][S][=Branch1][C][=O][=Branch1][C][=O][O-1][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is major microspecies at pH 7.3."}]