(2S,3R,4S,5R,6R)-6-((benzyloxy)methyl)-5-(((2R,4aR,6R,7R,8S,8aR)-7,8-diacetoxy-2-phenylhexahydropyrano[3,2-d][1,3]dioxin-6-yl)oxy)-2-(p-tolylthio)tetrahydro-2H-pyran-3,4-diyl diacetate