[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a carbamate ester that is 4-chlorobut-2-yn-1-yl ester of N-(3-chlorophenyl)carbamic acid. A herbicide, it is no longer approved for use within the European Community. It has a role as a herbicide. It is a carbamate ester, an acetylenic compound and a member of monochlorobenzenes."}, {"from": "gpt", "value": "[C][=C][C][=Branch1][=Branch2][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][Cl][N][C][=Branch1][C][=O][O][C][C][#C][C][Cl]"}]