β-D-GlcNAc-(1-6)-D-GlcNAc

2-acetamido-6-O-(2-acetamido-2-deoxy-*B-D-glucopy

2-ACETAMIDO-6-O-(2-ACETAMIDO-2-DEOXY-B-D -GLUCOPYRA

2-acetamido-6-O-(2-acetamido-2-deoxy-beta-D-glucopyranosy

2-Acetamido-6-O-(2-acetamido-2-deoxy-β-D-glucopyranosyl)-2-deoxy-D-glucopyranose