?-D-GalpNAc-(1->?)-?-D-GalpNAc-(1->?)[?-D-GlcpNAc-(1->?)]-?-D-Galp-(1->?)-L-gro-?-D-manHepp-(1->?)[?-D-Glcp-(1->?)]-L-gro-?-D-manHepp6PEtn-(1->?)-?-D-Kdop(2->