?-D-Neup-(2->?)-?-D-Gal?-(1->?)[?-D-Glcp-(1->?)]-?-D-GlcpNAc-(1->?)-?-D-Galp-(1->?)-?-D-Glcp-(1->?)[?-D-Neup-(2->?)-?-D-Gal?-(1->?)]-?-D-GlcpNAc-(1->?)-?-D-Galp(1->