[{"from": "human", "value": "Please give me some details about this molecule. [C][N][C][C][C][C][Ring1][Branch1][C][C][Branch1][Ring2][C][Ring1][#Branch1][O][C][=Branch1][C][=O][C][Branch1][Ring1][C][O][C][=C][C][=C][C][=C][Ring1][=Branch1].[C][N][C][C][C][C][Ring1][Branch1][C][C][Branch1][Ring2][C][Ring1][#Branch1][O][C][=Branch1][C][=O][C][Branch1][Ring1][C][O][C][=C][C][=C][C][=C][Ring1][=Branch1].[O][S][=Branch1][C][=O][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is the sulfate salt of atropine, a naturally-occurring alkaloid isolated from the plant Atropa belladonna.  Atropine functions as a sympathetic, competitive antagonist of muscarinic cholinergic receptors, thereby abolishing the effects of parasympathetic stimulation.  This agent may induce tachycardia, inhibit secretions, and relax smooth muscles. (NCI04)"}]