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