[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is a Radioactive Diagnostic Agent. The mechanism of action of fluciclovine f-18 is as a Positron Emitting Activity."}, {"from": "gpt", "value": "[C][C][Branch1][=N][C][C][Ring1][Ring2][Branch1][=Branch1][C][=Branch1][C][=O][O][N][18F]"}]