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