[{"from": "human", "value": "Describe this molecule. [C][O][C@@H1][C][C@@][C][=Branch2][Ring1][=Branch2][=C][C][N][Ring1][Branch1][C][C][C][=C][C][=Branch1][N][=C][Branch1][#Branch1][C][=C][Ring1][=N][Ring1][=Branch1][O][C][O][C][=C][Ring2][Ring1][Ring2]"}, {"from": "gpt", "value": "The molecule is an erythrina alkaloid with formula C18H21NO3 isolated from several erythrina plant species. It is a competitive antagonist of nicotinic acetylcholine receptors and exhibits antiparasitic and insecticidal activities. It has a role as a nicotinic antagonist, a phytogenic insecticide and an antiparasitic agent. It is an aromatic ether, an Erythrina alkaloid, an organic heterotetracyclic compound, a diether and a member of phenols."}]