[{"from": "human", "value": "Provide a description of this molecule. [C][C@H1][Branch1][=C][C][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][O][C][N][C][C@@H1][Branch1][P][C][=C][C][=Branch1][=Branch2][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][O][N][C][=O][O]"}, {"from": "gpt", "value": "The molecule is a long-acting beta-2 adrenergic agonist and isomer of formoterol with bronchodilator activity. Arformoterol selectively binds to and activates beta-2 adrenergic receptors in bronchiolar smooth muscle, thereby causing stimulation of adenyl cyclase, the enzyme that catalyzes the conversion of adenosine triphosphate (ATP) to cyclic-3',5'-adenosine monophosphate (cAMP). Increased intracellular cAMP levels cause relaxation of bronchial smooth muscle and lead to a reduced release of inflammatory mediators from mast cells. This may eventually lead to an improvement of airway function."}]