label: beta-D-glucosyl-(1<->1)-sphing-4-enine + a fatty acid => a beta-D-glucosyl-(1<->1')-N-acylsphing-4-enine + H2O
label_lc: beta-d-glucosyl-(1<->1)-sphing-4-enine + a fatty acid => a beta-d-glucosyl-(1<->1')-n-acylsphing-4-enine + h2o