O-(N-ACETYL-.ALPHA.-NEURAMINOSYL)-(2->3)-O-.BETA.-D-GALACTOPYRANOSYL-(1->3)-O-2-(ACETYLAMINO)-2-DEOXY-.BETA.-D-GALACTOPYRANOSYL-(1->3)-O-.ALPHA.-D-GALACTOPYRANOSYL-(1->4)-O-.BETA.-D-GALACTOPYRANOSYL-(1->4)-.BETA.-D-GLUCOPYRANOSE
o-(n-acetyl-.alpha.-neuraminosyl)-(2->3)-o-.beta.-d-galactopyranosyl-(1->3)-o-2-(acetylamino)-2-deoxy-.beta.-d-galactopyranosyl-(1->3)-o-.alpha.-d-galactopyranosyl-(1->4)-o-.beta.-d-galactopyranosyl-(1->4)-.beta.-d-glucopyranose