Dithiocarbonic acid O-((2R,3R,4S,5R,6S)-3,5-bis-benzyloxy-2-benzyloxymethyl-6-methoxy-tetrahydro-pyran-4-yl) ester S-methyl ester

Acetic acid (4aR,6S,7R,8aS)-6-[4-((2R,3S)-3-benzyloxy-tetrahydro-pyran-2-yl)-3-hydroxy-2-methylene-butyl]-2,2-dimethyl-hexahydro-pyrano[3,2-d][1,3]dioxin-7-yl ester