[{"from": "human", "value": "Could you provide a description of this molecule? [C][C@@H1][C][N][C][C@H1][Ring1][=Branch1][C][=C][C][=N][C][=C][N][=C][Ring1][=Branch1][C][=C][Ring1][#C][Ring1][#Branch2]"}, {"from": "gpt", "value": "The molecule is a prescription medication used to treat smoking addiction. This medication is the first approved nicotinic receptor partial agonist. Specifically, varenicline is a partial agonist of the alpha4/beta2 subtype of the nicotinic acetylcholine receptor. In addition it acts on alpha3/beta4 and weakly on alpha3beta2 and alpha6-containing receptors. A full agonism was displayed on alpha7-receptors."}]