Cellobiose 4-0-b-D-Glucopyranosyl (1->4)-b-D-Glucopyranose O O H O H HO CH2 O H O O H O H CH2 O H O O HCellobiose 4-0-b-D-Glucopyranosyl (1->4)-b-D-Glucopyranose O O H O H HO CH2 O H O O H O H CH2 O H O O H