1 0NN 1-benzyl-N-[3-(1'H,3h-spiro[2-benzofuran-1,4'-piperidin]-1'-yl)propyl]-D-prolinamide 1.000 2 DGV 1-benzyl-N-{3-[4-(2,6-dichlorophenyl)piperidin-1-yl]propyl}-D-prolinamide 0.882