(3aR,6R,7R,7aS)-6-(4-(p-methoxybenzyloxy)but-2-ynyl)-tetrahydro-2,2-dimethyl-3aH-[1,3]dioxolo[4,5-c]pyran-7-ol

Trifluoro-methanesulfonic acid (3aR,6R,7R,7aR)-7-(tert-butyl-dimethyl-silanyloxy)-2,2-dimethyl-tetrahydro-[1,3]dioxolo[4,5-c]pyran-6-ylmethyl ester