157553-90-7 2-(Trimethylsilyl)ethyl 4-O- (3-O-(2-deoxy-2-acetamido-beta-D-glucopyranosyl)-alpha-D-galactopyranosyl)-beta-D-galactopyranoside 2-(Trimethylsilyl)ethyl 4-O-(3-O-(2-deoxy-2-acetamido-glucopyranosyl)galactopyranosyl)galactopyranoside Tmse-daggg