(R,Z)-2-(2-((tert-butoxycarbonyl)amino)-3-hydroxy-3-methylbutanamido)-3-methylpent-2-enoic acid

allyl (R,Z)-2-(N-(tert-butoxycarbonyl)-2-((tert-butoxycarbonyl)amino)-3-hydroxy-3-methylbutanamido)-3-methylpent-2-enoate