[{"from": "human", "value": "Provide a description of this molecule. [C][N][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][/C][=C][/C][=C][N][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][O][C][C][O][C][C][O][C][C][18F]"}, {"from": "gpt", "value": "The molecule is a radiopharmaceutical compound containing the radionuclide fluorine-18 bound to the compound florbetapir, a molecule that binds with high affinity to beta amyloid plaque, a peptide that plays a key role in Alzheimer's Disease pathogenesis. Marketed as the product Amyvid, florbetapir 18F is indicated for positron emission tomography (PET) imaging of the brain to estimate \u03b2-amyloid neuritic plaque density in adult patients with cognitive impairment who are being evaluated for Alzheimer's Disease (AD) and other causes of cognitive decline.    The radionucleide fluorine-18 was chosen as it has a half life of 110 minutes allowing it to accumulate sufficiently in the brain before undergoing positon emission decay."}]