[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is an Aspidosperma alkaloid with molecular formula C21H24N2O3 found in the roots of Madagascar periwinkle (Catharanthus roseus, formerly known as Vinca rosea). It has a role as a plant metabolite. It is a monoterpenoid indole alkaloid, an organic heterohexacyclic compound, a methyl ester, an epoxide and an Aspidosperma alkaloid. It is a conjugate base of a lochnericine(1+)."}, {"from": "gpt", "value": "[C][C][C@][C][C][=Branch2][Ring2][Ring1][=C][C@@][Branch2][Ring1][Ring1][C@H1][Ring1][=Branch1][N][Branch1][Branch1][C][C][Ring1][Branch1][C][C@H1][C@@H1][Ring1][N][O][Ring1][Ring1][C][=C][C][=C][C][=C][Ring1][=Branch1][N][Ring1][P][C][=Branch1][C][=O][O][C]"}]