[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is an acrylate ester obtained by the formal condensation of the hydroxy group of butan-1-ol with the carboxy group of acrylic acid. It is functionally related to a butan-1-ol and an acrylic acid."}, {"from": "gpt", "value": "[C][C][C][C][O][C][=Branch1][C][=O][C][=C]"}]