preferred_name: sphing-4-enine-phosphocholine + a carboxylate => a sphingomyelin + H2O
preferred_name_lc: sphing-4-enine-phosphocholine + a carboxylate => a sphingomyelin + h2o
label: sphing-4-enine-phosphocholine + a carboxylate => a sphingomyelin + H2O
label_lc: sphing-4-enine-phosphocholine + a carboxylate => a sphingomyelin + h2o