[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is a quarternary ammonium salt whose basic unit comprises a decyltrimethylammonium cation and a bromide anion. It has a role as a surfactant. It is a quaternary ammonium salt and a bromide salt. It contains a decyltrimethylammonium ion."}, {"from": "gpt", "value": "[C][C][C][C][C][C][C][C][C][C][N+1][Branch1][C][C][Branch1][C][C][C].[Br-1]"}]