label: a beta-D-glucosylceramide + UDP-alpha-D-galactose = a beta-D-galactosyl-(1->4)-beta-D-glucosyl-(1<->1)-ceramide + UDP + H(+)
label_lc: a beta-d-glucosylceramide + udp-alpha-d-galactose = a beta-d-galactosyl-(1->4)-beta-d-glucosyl-(1<->1)-ceramide + udp + h(+)