Toluene-4-sulfonic acid (1S,4R,5R)-8-benzyloxy-4,5-bis-(tert-butyl-dimethyl-silanyloxy)-1-[(E)-(R)-6-(tert-butyl-dimethyl-silanyloxy)-1-(2-trimethylsilanyl-ethoxymethoxy)-hex-2-enyl]-octyl ester

Toluene-4-sulfonic acid (1S,4R,5R)-4,5-bis-(tert-butyl-dimethyl-silanyloxy)-1-[(R)-6-(tert-butyl-dimethyl-silanyloxy)-1-(2-trimethylsilanyl-ethoxymethoxy)-hexyl]-8-hydroxy-octyl ester