[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is an ammonium ion derivative resulting from the protonation of the tertiary amino group of (-)-voacangine. The major species at pH 7.3. It is a conjugate acid of a (-)-voacangine."}, {"from": "gpt", "value": "[C][C][C@H1][C][C@H1][C][C@@][Branch2][Ring1][#C][C@H1][Ring1][=Branch1][NH1+1][Branch1][Ring2][C][Ring1][=Branch1][C][C][C][=C][Ring1][Branch2][N][C][=C][Ring1][Branch1][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][O][C][C][=Branch1][C][=O][O][C]"}]