?-D-GlcpNAc?Ac-(1->?)-L-gro-?-D-manHepp6,7PEtn2-(1->?)[?-D-Galp-(1->?)-?-D-Glcp-(1->?)]-L-gro-?-D-manHepp-(1->?)[?-D-Kdop-(2->?)]-?-D-Kdop(2->