[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a cycloheptatriene with unsaturation at positions 1, 3 and 5. It is an annulene and a cycloheptatriene."}, {"from": "gpt", "value": "[C][C][=C][C][=C][C][=C][Ring1][#Branch1]"}]