[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is an ethyl 2-methyl-3-pentenoate in which the double bond adopts a cis-configuration."}, {"from": "gpt", "value": "[C][C][O][C][=Branch1][C][=O][C][Branch1][C][C][/C][=C][\\C]"}]