[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a lignan."}, {"from": "gpt", "value": "[C][=C][C][=Branch1][=Branch2][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][O][C][C][Branch1][Ring1][C][O][C][Branch1][S][C][C][=C][Branch1][#Branch2][C][=Branch1][=Branch1][=C][C][=C][Ring1][=Branch1][O][O][C][O]"}]