galactopyranosyl-1-4-(2-acetamido-2-deoxyglucopyranosyl)-1-3-galactopyranosyl-(1-4)-2-acetamido-2-deoxyglucopyranose
galactopyranosyl-1-4-(2-acetamido-2-deoxyglucopyranosyl)-1-3-galactopyranosyl-(1-4)-2-acetamido-2-deoxyglucopyranose