145594-17-8 Carbamic acid, (3-methyl-1-((2,3,5,6,8,9,11,12-octahydro-7H-1,4,10,13,7- benzotetraoxaazacyclopentadecin-7-yl)carbonyl)butyl)-, 1,1-dimethylethyl ester, (S)- N-(N'-tert-Butoxycarbonylleucyl)benzoaza-15-crown-5