[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a quaternary ammonium salt with choline cation and chloride anion. It has a role as an animal growth promotant. It is a chloride salt and a quaternary ammonium salt. It contains a choline."}, {"from": "gpt", "value": "[C][N+1][Branch1][C][C][Branch1][C][C][C][C][O].[Cl-1]"}]