[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. The molecule is a member of the class of chloroethanes that is ethane substituted by chloro groups at positions 1, 1 and 2."}, {"from": "gpt", "value": "[C][Branch1][=Branch1][C][Branch1][C][Cl][Cl][Cl]"}]