methyl N-acetyl-4-sulfogalactopyranosyl-1-4-2-sulfoidopyranoside-1-3-N-acetyl-4-sulfogalactopyranoside
methyl n-acetyl-4-sulfogalactopyranosyl-1-4-2-sulfoidopyranoside-1-3-n-acetyl-4-sulfogalactopyranoside