[(3aS,5aR,8aR,8bS)-2,2,7,7-Tetra­methyl­tetra­hydro-3aH-bis­[1,3]dioxolo[4,5-b:4′,5′-d]pyran-3a-yl]methyl (R)-N-(1-phenyl­eth­yl)sulfamate

In the title compound, C₂₀H₂₉NO₈S, the two five-membered rings adopt envelope conformations (with an O atom at the flap in each case), while the six-membered pyran ring displays a twist-boat conformation. In the crystal, mol­ecules are linked by N—H...O hydrogen bonds into a supra­molecular chain running along the a axis.