beta-D-GlcpA2N-(1->3)-beta-D-QuipNAc4NAc-(1->3)-beta-D-GlcpA2N-(1->3)-beta-D-QuipNAc4NAc-(1->2)-D-gro-?-L-manHepp-(1->2)-D-gro-?-L-manHepp-(1->3)-D-gro-?-L-manHepp-(1->?)-D-gro-L-3-deoxy-galNon2ulo-onic(?->