[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is an antiaromatic annulene that is cyclooctane having four double bonds at positions 1, 3, 5 and 7."}, {"from": "gpt", "value": "[C][=C][\\C][=C][/C][=C][\\C][=C][\\-Ring1][Branch2]"}]