(3S,4R)-4-(tert-butoxycarbonylamino)-5-methyl-3-(tert-butyldimethylsilanyloxy)hexanoic acid methyl ester

((S)-2-(((3S,4R)-4-((2S,3R)-2-((tert-butoxycarbonyl)amino)-3-(((S)-3-(4-methoxyphenyl)-2-(methylamino)propanoyl)oxy)butanamido)-3-hydroxy-5-methylhexanoyl)oxy)-3-methylbutanoyl)-L-leucyl-L-alanine

tert-butyl ((3S,7S,10R,11S,15S,18S,23aS)-11-hydroxy-18-isobutyl-10,15-diisopropyl-3-(4-methoxybenzyl)-2-methyl-1,4,8,13,16,19-hexaoxoicosahydro-15H-pyrrolo[1,2-g][1,13]dioxa[4,7,10,17]tetraazacyclohenicosin-7-yl)carbamate