(2R)-{[(4aR,6S,7R,8R,8aS)-7-(Acetylamino)-6-(benzyloxy)-2-phenylperhydropyrano[3,2-d][1,3]dioxin-8-yl]oxy}propanoic acidN-Acetyl-1-O-(phenylmethyl)-4,6-O-(phenylmethylene-alpha-muramic acid2-(3-Acetamido-2-benzyl-4,6,O-benzylidene-alpha-D-glucopyranosid-4-yloxy)propanoic acid tech