[{"from": "human", "value": "Provide a brief overview of this molecule. [C][=C][C][=Branch2][Ring1][=Branch1][=C][Branch1][Branch2][C][=Branch1][Ring2][=C][Ring1][=Branch1][Cl][C][C][=Branch1][C][=O][N][=C][Branch1][C][N][N][Cl]"}, {"from": "gpt", "value": "The molecule is a selective alpha-A2 adrenergic receptor agonist initially indicated for the treatment of hypertension but is now indicated as an extended release tablet for the treatment of ADHD. Guanfacine was first described in the literature in 1974.  Guanfacine was granted FDA approval on 27 October 1986."}]