1 L1D (2r,4s)-N^1^-(4-chlorophenyl)-N^2^-[2-fluoro-4-(2-oxopyridin-1(2h)-yl)phenyl]-4-hydroxy-4-phenylpyrrolidine-1,2-dicarboxamide 1.000 2 L1C (2r,4s)-N^1^-(4-chlorophenyl)-4-(2,4-difluorophenyl)-4-hydroxy-N^2^-(2-oxo-2h-1,3'-bipyridin-6'-yl)pyrrolidine-1,2-dicarboxamide 0.881 3 230 (2r,4r)-N~1~-(4-chlorophenyl)-N~2~-[2-fluoro-4-(2-oxopyridin-1(2h)-yl)phenyl]-4-methoxypyrrolidine-1,2-dicarboxamide 0.780