alpha-D-Kdop-(2->4)[beta-D-Glcp-(1->3)[beta-D-GlcpN-(1->4)]-alpha-D-GalpN-(1->3)-L-gro-alpha-D-manHepp6P-(1->3)-L-gro-alpha-D-manHepp2,4P2-(1->?)]-alpha-D-Kdop-(2->]