32694-82-9 , 3'-Galactosyllactose , b-D-Gal-(1→3)-b-D-Gal-(1→4)-D-Glc , 4-O-(3-O-b-D-Galactopyranosyl)-b-D-galactopyranosyl-D-glucopyranose C18H32O16 / 504.4432694-82-9 , 3'-Galactosyllactose , b-D-Gal-(1→3)-b-D-Gal-(1→4)-D-Glc ,4-O-(3-O-b-D-Galactopyranosyl)-b-D-galactopyranosyl-D-glucopyranose