preferred_name: alpha-L-rhamnosyl-(1->3)-N-acetyl-alpha-D-glucosaminyl-diphospho-trans,octa-cis-decaprenol + 2 UDP-alpha-D-galactofuranose => beta-D-galactofuranosyl-(1->5)-beta-D-galactofuranosyl-(1->4)-alpha-L-rhamnosyl-(1->3)-N-acetyl-alpha-D-glucosaminyl-diphospho-trans,octa-cis-decaprenol + 2 UDP + 2 H(+)