?-D-Glcp-(1->?)[?-D-Glcp-(1->?)]-L-gro-?-D-manHep?-(1->?)?-D-GlcpN-(1->?)-L-gro-?-D-manHep?-(1->?)[L-gro-?-D-manHep?-(1->?)]-L-gro-D-manHep(?->