1-(2,2-Diphenylbutyryl)-2-methylpyrrolidine 2-Methyl-1-(1-oxo-2,2-diphenylbutyl)pyrrolidine 2-Methyl-alpha,alpha-diphenyl-1-pyrrolidinebutyramide 34067-03-3 DRC 3324 Pyrrolidine, 1-(2,2-diphenylbutyryl)-2-methyl- Pyrrolidine, 2-methyl-1-(1-oxo-2,2-diphenylbutyl)- (9CI)