[beta-D-GlcpNAc-(1->2)-[beta-D-GlcpNAc-(1->?)-alpha-L-Manp-(1->6)]-[beta-D-GlcpNAc-(1->4)-[beta-D-GlcpNAc-(1->4)-beta-D-GlcpNAc-(1->2)-alpha-L-Manp-(1->3)]-beta-L-Manp-(1->4)]]-beta-D-GlcpNAc-(1->4)-?-D-GlcpNAc(1->