[L-gro-alpha-D-manHepp-(1->7)-[alpha-D-GlcpNAc-(1->3)-alpha-D-Glcp-(1->2)-alpha-D-Glcp-(1->2)-alpha-L-Galp-(1->3)]-alpha-D-Glcp-(1->3)-L-gro-alpha-D-manHepp-(1->3)]-L-gro-D-manHep(?->