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-beta-d-glucopyranosyl)-alpha-d-galactopyranosyl)-beta-d-galactopyranoside