[{"from": "human", "value": "Please give me some details about this molecule. [C][C][N][=C][Branch1][Ring2][N][Ring1][Branch1][N][C][=C][Branch1][=N][C][=N][C][=C][N][=C][Ring1][=Branch1][C][=C][Ring1][#Branch2][Br]"}, {"from": "gpt", "value": "The molecule is an imidazole derivative and a selective alpha-2 adrenergic receptor agonist. Upon ocular administration, brimonidine acts on the blood vessels causing them to constrict which leads to a decrease in the production of aqueous humor. Brimonidine also enhances the uveoscleral outflow of aqueous humor. This reduces intraocular pressure."}]