[{"from": "human", "value": "Provide a brief overview of this molecule. [C][O][C][=C][Branch2][Ring2][#Branch2][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][=Branch2][Ring1][=N][=N][C][=Branch1][Ring2][=N][Ring1][#Branch1][N][C][C][N][Branch1][Branch1][C][C][Ring1][=Branch1][C][=Branch1][C][=O][C][=C][C][=C][O][Ring1][Branch1][N][O][C].[Cl]"}, {"from": "gpt", "value": "The molecule is a synthetic piperazine derivative with hypotensive antiadrenergic properties, Prazosin Hydrochloride reduces peripheral resistance and relaxes vascular smooth muscles as a selective adrenergic alpha-1 antagonist by a mechanism not completely known. It is used in the treatment of heart failure, hypertension, pheochromocytoma, Raynaud's syndrome, prostatic hypertrophy, and urinary retention. (NCI04)"}]