?-D-GlcpNAc-(1->?),?-D-GlcpNAc-(1->?),alpha-D-Manp-(1->3)[alpha-D-Manp-(1->6)]-beta-D-Manp-(1->4)-beta-D-GlcpNAc-(1->4)-beta-D-GlcpNAc(1->
