4-硝基苯基2,3,4,6-四-O-乙酰基-beta-D-硫代吡喃半乳糖苷

(2R,3S,4S,5R,6R)-2-(acetoxymethyl)-6-(4-nitrophenylthio)tetrahydro-2H-pyran-3,4,5-triyl triacetate