2,2-Diphenylpropionic acid 3-quinuclidinyl ester hydrochloride 3818-79-9 4775-90-0 Aprolidin Aprolidine Benzeneacetic acid, alpha-methyl-alpha-phenyl-, 1-azabicyclo(2.2.2)oct-3-yl ester, HCl Propionic acid, 2,2-diphenyl-, 3-quinuclidinyl ester, hydrochloride