preferred_name: a sphingomyelin + CMP + H(+) => CDP-choline + an N-acylsphing-4-enine
preferred_name_lc: a sphingomyelin + cmp + h(+) => cdp-choline + an n-acylsphing-4-enine
label: a sphingomyelin + CMP + H(+) => CDP-choline + an N-acylsphing-4-enine
label_lc: a sphingomyelin + cmp + h(+) => cdp-choline + an n-acylsphing-4-enine