[{"from": "human", "value": "Describe this molecule. [C][C][C][C][C][Branch1][Ring1][C][C][C][O][S][=Branch1][C][=O][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is a organosulfate oxoanion that is the conjugate base of 2-ethylhexyl sulfate, obtained by deprotonation of the sulfo group; major species at pH 7.3. It is a conjugate base of a 2-ethylhexyl sulfate."}]