[{"from": "human", "value": "Provide a description of this molecule. [C][C][=N][S][=Branch1][C][=O][=Branch1][C][=O][C][=C][Branch1][Ring2][N][Ring1][Branch2][C][=C][C][=Branch1][Ring2][=C][Ring1][#Branch1][Cl]"}, {"from": "gpt", "value": "The molecule is a peripheral vasodilator used for hypertensive emergencies. It lacks diuretic effect, apparently because it lacks a sulfonamide group."}]