[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is an acetate ester that is propyl acetate substituted by an ethoxy group at position 3. It is an acetate ester and an ether."}, {"from": "gpt", "value": "[C][C][O][C][C][C][O][C][=Branch1][C][=O][C]"}]