2-azido-3,4-O-isopropylidene-D-ribo-1,3,4-heptanetriol

2-azido-1-O-(2,3,4,6-tetra-O-benzyl-α-D-galactopyranosyl)-3,4-O-isopropylidene-D-ribo-1,3,4-heptanetriol