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