[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is the bromide salt of neostigmine. It contains a neostigmine."}, {"from": "gpt", "value": "[C][N][Branch1][C][C][C][=Branch1][C][=O][O][C][=C][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][N+1][Branch1][C][C][Branch1][C][C][C].[Br-1]"}]