label: a beta-D-glucosyl-(1<->1')-N-acylsphing-4-enine(in) <=> a beta-D-glucosyl-(1<->1')-N-acylsphing-4-enine(out)
label_lc: a beta-d-glucosyl-(1<->1')-n-acylsphing-4-enine(in) <=> a beta-d-glucosyl-(1<->1')-n-acylsphing-4-enine(out)