[{"from": "human", "value": "What can you tell me about this molecule? [C][C@@H1][C@H1][Branch2][Ring1][=Branch2][C@H1][C@H1][Branch2][Ring1][Ring1][C@@][Ring1][Branch1][Branch1][N][C][=C][Branch1][Branch1][C][Ring1][=Branch1][=O][C][C][=C][O][C][O][C][=C][C][=Branch1][#Branch2][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][O][C][O][C]"}, {"from": "gpt", "value": "The molecule is a neolignan with formula C21H26O5, originally isolated from Piper kadsura. It has a role as a plant metabolite and a platelet-activating factor receptor antagonist. It is an enone, a cyclic ketone, a bridged compound, a dimethoxybenzene, a carbobicyclic compound, a secondary alcohol and a neolignan."}]