label: an N-acyl-15-methylhexadecasphing-4-enine + phosphate => N-acyl-15-methylhexadecasphing-4-enine-1-phosphate + H2O
label_lc: an n-acyl-15-methylhexadecasphing-4-enine + phosphate => n-acyl-15-methylhexadecasphing-4-enine-1-phosphate + h2o