preferred_name: [alpha-D-GalNAc-(1->4)]4-alpha-D-GalNAc-(1->3)-alpha-D-diNAcBac-tri-trans,hepta-cis-undecaprenyl diphosphate + UDP-alpha-D-glucose => [alpha-D-GalNAc-(1->4)]2-[beta-D-Glc-(1->3)]-[alpha-D-GalNAc-(1->4)]2-alpha-D-GalNAc-(1->3)-alpha-D-diNAcBac-tri-trans,hepta-cis-undecaprenyl diphosphate + UDP + H(+)