O-.ALPHA.-D-GALACTOPYRANOSYL-(1->2)-O-3-O-(HYDROXY(2-HYDROXY-1-(HYDROXYMETHYL)ETHOXY)PHOSPHINYL)-.BETA.-D-GALACTOPYRANOSYL-(1->4)-O-2-(ACETYLAMINO)-2-DEOXY-.BETA.-D-GLUCOPYRANOSYL-(1->3)-O-.BETA.-D-GALACTOPYRANOSYL-(1->4)-.BETA.-D-GLUCOPYRANOSE
o-.alpha.-d-galactopyranosyl-(1->2)-o-3-o-(hydroxy(2-hydroxy-1-(hydroxymethyl)ethoxy)phosphinyl)-.beta.-d-galactopyranosyl-(1->4)-o-2-(acetylamino)-2-deoxy-.beta.-d-glucopyranosyl-(1->3)-o-.beta.-d-galactopyranosyl-(1->4)-.beta.-d-glucopyranose