[{"from": "human", "value": "Provide a brief overview of this molecule. [O-1][S][=Branch1][C][=O][=Branch1][C][=O][O-1].[Ba+2]"}, {"from": "gpt", "value": "The molecule is a Radiographic Contrast Agent. The mechanism of action of barium sulfate is as a X-Ray Contrast Activity."}]