(S,E)-5-iodo-4-methylpent-4-en-2-yl (3R,5S)-5-(2-((S)-2-((4-methoxybenzyl)oxy)-3-((triisopropylsilyl)oxy)propyl)thiazol-4-yl)-3-((((1,1,1-trichloro-2-methylpropan-2-yl)oxy)carbonyl)amino)hexanoate

[(6Z,8E)-(3S,11S,15R,17S)-3-(tert-butyldimethylsilanyloxymethyl)-9,11,17-trimethyl-5,13-dioxo-4,12-dioxa-20-thia-21-azabicyclo[16.2.1]heneicosa-1(21),6,8,18-tetraen-15-yl]carbamic acid 2,2,2-trichloro-1,1-dimethyl ester