[beta-L-Glcp-(1->4)-[alpha-L-GlcpN-(1->7)-alpha-L-GlcpA-(1->2)-L-gro-alpha-D-manHepp-(1->3)]-L-gro-alpha-D-manHepp-(1->5)]-alpha-L-3-deoxy-manOct2ulop4P-onic(2->