1 RWM (5s)-5-methyl-5-[(3-phenyl-1,2-oxazol-5-yl)methyl]pyrrolidine-2,4-dione 1.000 2 5ND 5-(2-naphthylmethyl)-D-hydantoin 0.727 3 5NL 5-(2-naphthylmethyl)-L-hydantoin 0.727