(10aS,11R,12S,14aS)-4-tert-butyl 14a-ethyl 11-benzyloxy-12-methyl-9,14-dioxotetradecahydrobenzo[e][1]azacyclododecine-4,14a(1H)-dicarboxylate

(3S,4R,E)-4-benzyloxy-11-(tert-butyldiphenylsilyloxy)-3-methyl-7-oxoundec-5-enenitrile

tert-butyl (8R,9S,E)-8-benzyloxy-10-cyano-9-methyl-5-oxodec-6-enyl(3-(tert-butyldimethylsilyloxy)propyl)carbamate