An oligosaccharide isolated from an organism is found tocontain two glucose residues and one galactose residue.Exhaustive methylation followed by hydrolysis producedtwo glucoses with methoxy groups at positions 2, 3,and 6 and galactose with methoxy groups at positions2, 3, 4, and 6. What is the structure of the originaloligosaccharide?

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An oligosaccharide isolated from an organism is found to
contain two glucose residues and one galactose residue.
Exhaustive methylation followed by hydrolysis produced
two glucoses with methoxy groups at positions 2, 3,
and 6 and galactose with methoxy groups at positions
2, 3, 4, and 6. What is the structure of the original
oligosaccharide?

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