D-arabino-Hept-2-enitol,2,6-anhydro-3-deoxy-1-C-phenyl-4,5,7-tris-O-(phenylmethyl)-, (1S)-

(2S,4S,4aS,6R,7R,8S,8aR)-7,8-Bis-benzyloxy-6-benzyloxymethyl-2,4-diphenyl-hexahydro-pyrano[3,2-d][1,3]dioxine