1-(3,4-difluorophenyl)pyrrolidin-2-one 2-pyrrolidinone, 1-(3,4-difluorophenyl)- InChI=1/C10H9F2NO/c11-8-4-3-7(6-9(8)12)13-5-1-2-10(13)14/h3-4,6H,1-2,5H