for the following products
4-Nitrophenyl 2-acetamido-3-O-(2,3,4,6-tetra-O-acetyl-beta-D-galactopyranosyl)-2-deoxy-alpha-D-galactopyranoside and 4-Nitrophenyl 2-(acetylamino)-2-deoxy-3-O-(2,3,4,6-tetra-O-acetyl-beta-D-galactopyranosyl)-beta-D-glucopyranoside