[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. The molecule is a chlorinated organic chemical due to environmental exposure, that can be detected in breast milk. The free species of phenols and chlorinated organic appear to be most prevalent in milk (A11269)."}, {"from": "gpt", "value": "[C][=C][C][=Branch1][#Branch2][=C][Branch1][=Branch1][C][=C][Ring1][=Branch1][Cl][Cl][O]"}]