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