[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C@][C][C][C@H1][C@H1][Branch2][Ring1][#C][C@@H1][Ring1][=Branch1][C][C@@H1][C@][Ring1][=Branch2][Branch1][#C][O][C@@H1][Branch1][Ring2][O][Ring1][Branch1][C][=C][C][=C][O][Ring1][Branch1][C][=Branch1][C][=O][C][18F][C][C][C][=C][C][=Branch1][C][=O][C][C][C@H1][Ring2][Ring1][O][Ring1][#Branch1]"}, {"from": "gpt", "value": "The molecule is under investigation in clinical trial NCT02455453 (Assessment of Functional Status of Estrogen Receptors in Breast Cancer by Positron Emission Tomography)."}]