(Z)-2-((2S,3R)-N-(tert-butoxycarbonyl)-2-((tert-butoxycarbonyl)amino)-3-hydroxy-3-methylpentanamido)-3-methylpent-2-enoic acid

[(1R,2R)-2-(5-Bromo-2-hydroxy-phenoxy)-1-methoxymethoxymethyl-2-methyl-butyl]-carbamic acid tert-butyl ester