Marimastat;(2R,3S)-N1-((S)-3,3-dimethyl-1-(methylamino)-1-oxobutan-2-yl)-N4,3-dihydroxy-2-isobutylsuccinamide;(2S,3R)-N4-[(1S)-2,2-Dimethyl-1-[(methylamino)carbonyl]propyl]-N1,2-dihydroxy-3-(2-methylpropyl)butanediamide;(2R,3S)-N1-((S)-3,3-diMethyl-1-(MethylaMino)-1-oxobutan-2-yl)-N4;BB 2516