label: an N-acetyl-alpha-D-glucosaminyl-diphospho-di-trans,poly-cis-dolichol + UDP-N-acetyl-alpha-D-glucosamine => an N,N'-diacetylchitobiosyl-diphospho-di-trans,poly-cis-dolichol + UDP + H(+)
label_lc: an n-acetyl-alpha-d-glucosaminyl-diphospho-di-trans,poly-cis-dolichol + udp-n-acetyl-alpha-d-glucosamine => an n,n'-diacetylchitobiosyl-diphospho-di-trans,poly-cis-dolichol + udp + h(+)