[alpha-D-Glcp-(1->4)-beta-D-GlcpNAc-(1->2)-beta-D-Glcp-(1->3)-alpha-L-GalpN-(1->3)]-L-gro-alpha-D-manHepp6P-(1->3)-L-gro-alpha-D-manHepp2,4P2-(1->5)-L-3-deoxy-manOct2ulo-onic(?->