[{"from": "human", "value": "Describe this molecule. [C][=C][C][=Branch1][C][=O][N][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][N][=C][N][=C][Ring1][Branch2][N][C][=C][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][C][18F]"}, {"from": "gpt", "value": "The molecule is the anilinoquinazoline derivative FEQA radiolabeled with the positron-emitting radioisotope fluorine F 18 with epidermal growth factor receptor (EGFR) binding and radioisotopic activities. Fluorine F 18 FEQA irreversibly binds to EGFR, allowing imaging of EGFR-positive tumor cells with positron emission tomography (PET)."}]