preferred_name: a carboxylate + choline + H(+) => an acylcholine + H2O
preferred_name_lc: a carboxylate + choline + h(+) => an acylcholine + h2o
label: a carboxylate + choline + H(+) => an acylcholine + H2O
label_lc: a carboxylate + choline + h(+) => an acylcholine + h2o