label: an N-acylsphing-4-enine 1-phosphoethanolamine + CMP + H(+) => CDP-ethanolamine + an N-acylsphing-4-enine
label_lc: an n-acylsphing-4-enine 1-phosphoethanolamine + cmp + h(+) => cdp-ethanolamine + an n-acylsphing-4-enine