[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a white crystalline powder. "}, {"from": "gpt", "value": "[C][=C][C][=Branch1][#Branch2][=C][Branch1][=Branch1][C][=C][Ring1][=Branch1][Cl][Cl][C][Branch1][C][Cl][Branch1][C][Cl][Cl]"}]