[{"from": "human", "value": "Provide a brief overview of this molecule. [C][=C][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][=Branch1][C][=O][O][Bi][O][Ring1][Branch2].[O]"}, {"from": "gpt", "value": "The molecule is a bismuth salt of salicylic acid.  Little absorbed from the gastrointestinal tract, bismuth subsalicylate exerts a local effect on the gastric mucosa, coating it and protecting it from the corrosive effects of acid and pepsin.  This agent also has local antimicrobial properties. (NCI04)"}]