[L-gro-alpha-D-manHepp-(1->6)-[beta-D-Glc?-(1->4)-alpha-D-GlcpN-(1->7)-L-gro-alpha-D-manHepp-(1->2)-L-gro-alpha-D-manHepp-(1->3)-L-gro-alpha-D-manHepp-(1->5)]]-D-gro-L-3-deoxy-galNon2ulo-onic(?->