(S,E)-tert-butyl 2-(3,5-dibenzyl-4-oxo-1,3,5-triazinan-1-yl)-6-oxohex-4-enoate

benzylN²-((benzyloxy)carbonyl)-N⁶-(((R)-2-((R)-1-phenylethyl)isoxazolidin-5-yl)methylene)-L-lysinate

benzylN²-((benzyloxy)carbonyl)-N⁶-((R)-4-(((benzyloxy)carbonyl)amino)-2-hydroxybutyl)-L-lysinate