6-O-Galactopyranosyl-2-acetamido-2-deoxygalactose 72142-81-5 D-Galactose, 2-(acetylamino)-2-deoxy-6-O-beta-D-galactopyranosyl-, (8S-cis)- beta-D-Gal(1-6)-galnac beta-Galactose(1-6)-N-acetylgalactosamine