alpha-D-Neup5Ac-(2->?)-beta-D-Galp-(1->4)-beta-D-GlcpNAc-(1->?)[beta-D-Galp-(1->4)-beta-D-GlcpNAc-(1->?)]-alpha-D-Manp-(1->3)-beta-D-Manp-(1->4)-beta-D-GlcpNAc-(1->
