Synonyms: 2-[[(Hydroxydiphenylacetyl)oxy]methyl]-1,1-dimethylpyrrolidin-1-ium;(1,1-dimethylpyrrolidin-1-ium-2-yl)methyl 2-hydroxy-2,2-di(phenyl)acetate;(1,1-dimethylpyrrolidin-1-ium-2-yl)methyl 2-hydroxy-2,2-di(phenyl)ethanoate;2-hydroxy-2,2-di(phenyl)acetic acid (1,1-dimethylpyrrolidin-1-ium-2-yl)methyl ester