2-[[(3aR,4S,6R,6aS)-6-[7-Bromo-5-(propylthio)-3H-1,2,3-triazolo[4,5-d]pyrimidin-3-yl]tetrahydro-2,2-dimethyl-4Hcyclopenta-1,3-dioxol-4-yl]oxy]-acetic acid methyl ester Specification：>98%
