[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][C@H1][C@@H1][C][N][C][C][C][=C][Branch2][Ring1][Branch1][C@@H1][Ring1][=Branch1][C][C@@H1][Ring1][#Branch2][C][=Branch1][Branch1][=C][O][Ring1][=C][C][=Branch1][C][=O][O][C][N][C][=C][C][=C][C][=C][Ring2][Ring1][Ring1][Ring1][=Branch1]"}, {"from": "gpt", "value": "The molecule is a heteropentacyclic compound that is (20alpha)-16,17-didehydro-18-oxayohimban which is substituted at position 16 by a methoxycarbonyl group and at position 19 by a methyl group. It is a metabolite found in several plant species. It has a role as a plant metabolite. It is a yohimban alkaloid, an organic heteropentacyclic compound and a methyl ester. It is a conjugate base of a tetrahydroalstonine(1+)."}]