Methanesulfonic acid (2S,3S)-3-[(R)-2-(tert-butyl-dimethyl-silanyloxy)-6-(4-methoxy-benzyloxy)-hex-4-ynyl]-oxiranylmethyl ester

(R)-5-(t-butyldimethylsilyl)oxy-9-(t-butyldiphenylsilyl)oxy-1-(4-methoxybenzyl)oxy-2,7-nonadiyne