[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a member of the class of aryltetrahydrofurans carrying two 3,4-dimethoxyphenyl substituents at positions 2 and 5 as well as two methyl groups at positions 3 and 4. It has a role as a bone density conservation agent, a neuroprotective agent, a platelet aggregation inhibitor and a plant metabolite. It is an aryltetrahydrofuran, a dimethoxybenzene, a ring assembly and a lignan."}, {"from": "gpt", "value": "[C][C@@H1][C@@H1][Branch2][Ring2][=Branch2][C@H1][Branch2][Ring1][Branch1][O][C@H1][Ring1][Branch1][C][=C][C][=Branch1][#Branch2][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][O][C][O][C][C][=C][C][=Branch1][#Branch2][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][O][C][O][C][C]"}]