[{"from": "human", "value": "What can you tell me about this molecule? [C][C@@H1][Branch1][=N][C@H1][Branch1][=Branch2][C][=C][C][=C][C][=C][Ring1][=Branch1][O][N][C].[C][C@@H1][Branch1][=N][C@H1][Branch1][=Branch2][C][=C][C][=C][C][=C][Ring1][=Branch1][O][N][C].[O][S][=Branch1][C][=O][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is the sulfate salt form of pseudoephedrine, a phenethylamine and a diastereomer of ephedrine with sympathomimetic property. Pseudoephedrine sulfate displaces norepinephrine from storage vesicles in presynaptic neurones, thereby releasing norepinephrine into the neuronal synapses where it stimulates primarily alpha-adrenergic receptors. It also has weak direct agonist activity at alpha- and beta- adrenergic receptors. Receptor stimulation results in vasoconstriction and decreases nasal and sinus congestion."}]