preferred_name: O-.ALPHA.-D-GLUCOPYRANOSYL-(1->3)-O-(.BETA.-D-GLUCOPYRANURONOSYL-(1->4))-O-6-DEOXY-.BETA.-L-MANNOPYRANOSYL-(1->4)-O-.ALPHA.-D-GLUCOPYRANOSYL-(1->3)-O-.ALPHA.-D-GALACTOFURANOSYL-(1->2)-6-DEOXY-.ALPHA.-L-MANNOPYRANOSE