[{"from": "human", "value": "Generate a molecule based on this description. The molecule is under investigation in clinical trial NCT02819024 (Dexamethasone Effects in Patients With Refractory Non-Small Cell Lung Cancer Using FLT Positron Emission Tomography)."}, {"from": "gpt", "value": "[C][C][=C][N][Branch1][#Branch2][C][=Branch1][C][=O][N][C][Ring1][#Branch1][=O][C@H1][C][C@@H1][Branch1][=Branch2][C@H1][Branch1][Ring2][O][Ring1][Branch1][C][O][18F]"}]