?-D-GlcpNAc-(1->?)-L-gro-?-D-manHep?-(1->?)[?-D-Glcp-(1->?)]-L-gro-?-D-manHep?-(1->?)-L-gro-?-D-manHep?-(1->?)-?-D-Kdop-(2->?)-?-D-GlcpNAc-(1->?)-?-D-GlcpNAc(1->