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