1 0DS N-{(2r)-2-[2-(hydroxyamino)-2-oxoethyl]-4-methylpentanoyl}-L-leucyl-L-phenylalaninamide 1.000 2 RO4 [[1-[N-hydroxy-acetamidyl]-3-methyl-butyl]-carbonyl-leucinyl]-alanine ethyl ester 0.714