(Fluoro-2 phenyl)methyl-5 methyl-3 pyrrolidinone-2 [French] 2-Pyrrolidinone, 5-((2-fluorophenyl)methyl)-3-methyl- 5-((2-Fluorophenyl)methyl)-3-methyl-2-pyrrolidinone 97562-00-0 SR 41881