[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][C][=C][C][=C][C][=C][Ring1][=Branch1][C][C][=C][C][=C][C][=C][Ring1][=Branch1][N][Ring1][#C][C][=Branch1][Branch1][=N][Ring2][Ring1][C][N]"}, {"from": "gpt", "value": "The molecule is used for the prevention of itching associated with allergic conjunctivitis. It has a multi-action effect that inhibits the allergic response in 3 ways: 1. stabilizes mast cells by preventing mast cell degranulation to control the allergic response, 2. prevents histamine binding to both the H1- and H2-receptors to stop itching and provide lasting protection, and 3. prevents the release of proinflammatory chemical mediators from the blood vessel to halt progression of the allergic response."}]