label: alpha-D-GalNAc-(1->3)-alpha-D-GalNAc-di-trans,octa-cis-undecaprenyl diphosphate + UDP-alpha-D-galactose <=> beta-D-Gal-(1->3)-alpha-D-GalNAc-(1->3)-alpha-D-GalNAc-di-trans,octa-cis-undecaprenyl diphosphate + UDP + H(+)
label_lc: alpha-d-galnac-(1->3)-alpha-d-galnac-di-trans,octa-cis-undecaprenyl diphosphate + udp-alpha-d-galactose <=> beta-d-gal-(1->3)-alpha-d-galnac-(1->3)-alpha-d-galnac-di-trans,octa-cis-undecaprenyl diphosphate + udp + h(+)