(4aR,4bR,5S,8aR,9aS)-decahydro-2H-pyrano[2,3-b]benzofuran-5-yl-(4-nitrophenyl)carbonate

(4aR,4bR,5S,8aR,9aS)-decahydro-2H-pyrano[2,3-b]benzofuran-5-yl ((2S,3R)-3-hydroxy-4-(N-isobutyl-4-methoxyphenylsulfonamido)-1-phenylbutan-2-yl)carbamate