(2S,3S,5S,8R,9S,10R)-8-((benzyloxy)methoxy)-2-(((tert-butyldimethylsilyl)oxy)methyl)-3-(((triisopropylsilyl)oxy)methyl)-1,4,6-trioxaspiro[4.5]decane-9,10-diyl dibenzoate

(2R,3S,5S,8R,9S,10R)-8-((benzyloxy)methoxy)-2-((R)-((4-bromobenzoyl)oxy)(thiazol-2-yl)methyl)-3-(((triisopropylsilyl)oxy)methyl)-1,4,6-trioxaspiro[4.5]decane-9,10-diyl bis(4-bromobenzoate)