(3-Benzyloxy-2-benzyloxymethyl-2-ethoxycarbonylmethoxymethyl-propoxy)-acetic acid ethyl ester

2,2-bis(benzyloxymethyl)-1,3-bis[O-β-D-galactopyranosyl-(1->4)-(2-acetamido-2-deoxy-β-D-glucopyranosyl-oxy)]-propane