[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is an Expectorant. The physiologic effect of guaifenesin is by means of Decreased Respiratory Secretion Viscosity, and Increased Respiratory Secretions."}, {"from": "gpt", "value": "[C][O][C][=C][C][=C][C][=C][Ring1][=Branch1][O][C][C][Branch1][Ring1][C][O][O]"}]