[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][C][Branch1][C][C][N][C][C][Branch1][P][C][O][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][C][C][O][C][O].[C][C][Branch1][C][C][N][C][C][Branch1][P][C][O][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][C][C][O][C][O].[C][=Branch1][#Branch1][=C][/C][=Branch1][C][=O][O][\\C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is the fumarate salt form of metoprolol, a cardioselective competitive beta-1 adrenergic receptor antagonist with antihypertensive properties and devoid of intrinsic sympathomimetic activity. Metoprolol antagonizes beta 1-adrenergic receptors in the myocardium, thereby reducing the rate and force of myocardial contraction, and consequently a diminished cardiac output. This agent may also reduce the secretion of renin with subsequent reduction in levels of angiotensin II thereby preventing vasoconstriction and aldosterone secretion."}]