[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule appears as colorless lustrous crystals. "}, {"from": "gpt", "value": "[C][O][C][=C][Branch1][Ring2][O][Ring1][Branch1][C][=C][Branch1][Branch1][C][=C][Ring1][#Branch1][C][=O]"}]