[{"from": "human", "value": "Provide a description of this molecule. [C][C@H1][C][C][=C][C][=Branch2][Ring1][#C][=C][Branch2][Ring1][#Branch2][C][=C][Ring1][=Branch1][C@@H1][Branch1][Branch1][C@H1][Ring1][#Branch2][C][C][=C][C][=Branch1][=Branch2][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][O][O][O][O][C]"}, {"from": "gpt", "value": "The molecule is a lignan that is 1,2,3,4-tetrahydronaphthalene substituted by methyl groups at positions 2 and 3, a hydroxy group at position 7, a methoxy group at position 6 and a 3,4-dihydroxyphenyl group at position 1. It has been isolated from the bark of Machilus robusta. It has a role as a plant metabolite. It is a lignan, a member of catechols and a member of guaiacols."}]