tert-butyl (1S,3R,5R,6R)-1-(2-hydroxyethyl)-3-methyl-14-oxo-5-((trimethylsilyl)oxy)-10-azaspiro[5.8]tetradecane-10-carboxylate

tert-butyl (7aS,10aS,12R,14R,14aR)-7a-hydroxy-12-methyl-14-((trimethylsilyl)oxy)dodecahydro-9H-isochromeno[1,8a-e]azonine-4(1H)-carboxylate