[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][N+1][Branch2][Ring2][C][C][C][C][Ring1][=Branch1][Branch1][Branch1][C][C][Ring1][=Branch1][C][Branch1][=Branch2][C][=C][C][=C][C][=C][Ring1][=Branch1][Branch1][=Branch2][C][=C][C][=C][C][=C][Ring1][=Branch1][O][C][C][O][C][C][=C][C][=C][C][=C][Ring1][=Branch1].[Br-1]"}, {"from": "gpt", "value": "The molecule is a quaternary ammonium salt that is the bromide salt of umeclidinium. Used in combination with vilanterol for long-term maintenance treatment of airflow obstruction in patients with chronic obstructive pulmonary disease. It has a role as a muscarinic antagonist. It is a quaternary ammonium salt and an organic bromide salt. It contains an umeclidinium."}]