(2S,3S)-6-[4-O-Acetyl-2,6-dideoxy-3-O-(2,6-dideoxy-4-O-methyl-alpha-D-galactopyranosyl)-beta-D-galactopyranosyloxy]-2-[2,6-dideoxy-3-O-[2,6-dideoxy-3-O-(2,6-dideoxy-4-O-isobutyryl-3-C-methyl-alpha-L-mannopyranosyl)-beta-D-glucopyranosyl]-beta-D-glucopyran