[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C@@H1][C][C][=C][C][=Branch2][Branch1][O][=C][Branch2][Branch1][Branch1][C][=Branch2][Ring2][S][=C][Ring1][=Branch1][C][=C][Branch2][Ring2][=Branch1][C][=C][Branch2][Ring1][O][C][=C][Ring1][=Branch1][C@@H1][Branch1][Branch1][C@@H1][Ring1][S][C][O][C][=Branch1][C][=O][/C][=C][/C][=C][C][=C][C][=C][Ring1][=Branch1][O][C][O][Ring2][Ring1][Branch1][O][C][O][O][C][O][C]"}, {"from": "gpt", "value": "The molecule is a lignan isolated from the roots and stems of Kadsura longipedunculata and has been shown to exhibit inhibitory activity against HIV-1 protease. It has a role as a metabolite and a HIV protease inhibitor. It is a cinnamate ester, an aromatic ether, a lignan and an organic heterotetracyclic compound."}]