beta-D-GlcpNAc-(1->3)-beta-D-Galp-(1->4)-beta-D-GlcpNAc-(1->4)-?-D-Galp-(1->?)beta-D-GlcpNAc-(1->?)-L-gro-alpha-D-manHepp-(1->?)[beta-D-Glcp-(1->?)]-L-gro-alpha-D-manHepp-(1->?)-?-D-Kdop(2->