[(2R,3S,4S,5R,6R)-3,4,5-tribenzyloxy-6-(benzyloxymethyl)tetrahydr opyran-2-yl] 2,2,2-trichloroethanimidate

1,5-anhydro-3-O-(4-bromobenzyl)-2-deoxy-6-O-triisopropylsilyl-D-arabino-hex-1-enitol