L-gro-?-D-manHepp-(1->?)[?-D-GlcpNAc-(1->?)]-L-gro-?-D-manHepp-(1->?)[?-D-Glcp-(1->?)]-L-gro-?-D-manHepp-(1->?)[D-gro-?-D-talOct2ulop-onic-(2->?)]-?-D-Kdo?(2->