[{"from": "human", "value": "What can you tell me about this molecule? [C][C@@H1][Branch1][P][C][C][=C][C][=Branch1][=Branch2][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][O][O][C][C@H1][Branch1][C][C][C][C][=C][C][=Branch1][#Branch2][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][O][C][O][C]"}, {"from": "gpt", "value": "The molecule is a lignan that is 2,3-dimethylbutane substituted by a 4-hydroxy-3-methoxyphenyl group at position 1 and a 3,4-dimethoxyphenyl group at position 4. It has been isolated from the bark of Machilus robusta. It has a role as a plant metabolite. It is a lignan and a member of guaiacols."}]