The molecule is a quaternary ammonium salt composed of 3-{[cyclopentyl(hydroxy)phenylacetyl]oxy}-1,1-dimethylpyrrolidin-1-ium and bromide ions in a 1:1 ratio. It is a quaternary ammonium salt and an organic bromide salt.
(1,1-dimethylpyrrolidin-1-ium-3-yl) 2-cyclopentyl-2-hydroxy-2-phenylacetate;bromide