[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][O][C][=C][Branch2][Ring2][Ring2][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][C@@H1][C][O][C@H1][Branch1][=Branch1][C@@H1][Ring1][Branch1][C][O][C][=C][C][=Branch1][=Branch2][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][O][O][C][O]"}, {"from": "gpt", "value": "The molecule is a lignan that is tetrahydrofuran substituted at positions 2, 3 and 4 by 4-hydroxy-3-methoxyphenyl, hydroxymethyl and 4-hydroxy-3-methoxybenzyl groups respectively (the 2R,3S,4S-diastereomer). It is a lignan, a member of oxolanes and a member of phenols. It is an enantiomer of a (+)-lariciresinol."}]