[{"from": "human", "value": "Provide a brief overview of this molecule. [C][Branch2][Ring1][#Branch1][C][N][Branch1][#Branch2][C][P][=Branch1][C][=O][Branch1][C][O-1][O-1][C][P][=Branch1][C][=O][Branch1][C][O-1][O-1][N][Branch1][#Branch2][C][P][=Branch1][C][=O][Branch1][C][O-1][O-1][C][P][=Branch1][C][=O][Branch1][C][O-1][O-1].[Na+1].[Na+1].[Na+1].[Na+1].[Na+1].[153Sm+3]"}, {"from": "gpt", "value": "The molecule is a Radioactive Therapeutic Agent. The mechanism of action of samarium sm-153 lexidronam pentasodium is as a Radiopharmaceutical Activity."}]