(1S,2R,3R,4R)-2-(tert-butyldiphenylsilyloxymethyl)-3-(formylmethyl)-1,4-bis-O-(triethylsilyl)cyclopentane-1,4-diol

(1R,3S,4R,5R)-4-(((tert-butyldiphenylsilyl)oxy)methyl)-5-((2Z,5Z,8Z)-undeca-2,5,8-trien-1-yl)cyclopentane-1,3-diyl dibenzoate