1,1-Diphenyl-2-methyl-3-pyrrolidyl-1-propionyloxypropane oxalate 1-Pyrrolidinepropanol, alpha,alpha-diphenyl-beta-methyl-, propionate, oxalate 4838-44-2 alpha,alpha-Diphenyl-beta-methyl-1-pyrrolidinepropanol propionate oxalate