[(2S,4S,6R,8R,10S)-8-Benzyloxymethyl-10-(tert-butyl-dimethyl-silanyloxy)-4-methoxy-1,7-dioxa-spiro[5.5]undec-2-yl]-methanol

((2R,4S,6S,8S,10S)-2-Benzyloxymethyl-8-iodomethyl-10-methoxy-1,7-dioxa-spiro[5.5]undec-4-yloxy)-tert-butyl-dimethyl-silane