[alpha-D-Glcp-(1->6)-[beta-D-Glcp-(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)]]-L-3-deoxy-manOct2ulo7PEtn-onic(?->