[alpha-D-Glc?-(1->6)-[beta-D-Glc?-(1->4)-alpha-D-Glc?N-(1->7)-L-gro-alpha-D-manHep?-(1->2)-L-gro-alpha-D-manHep?-(1->3)-L-gro-alpha-D-manHep?-(1->5)]]-alpha-L-3-deoxy-manOct2ulo?4P-onic(2->