preferred_name: S-sulfanyl-L-cysteine + pyruvate + NH4(+) => L-cystine + H2O
preferred_name_lc: s-sulfanyl-l-cysteine + pyruvate + nh4(+) => l-cystine + h2o
label: S-sulfanyl-L-cysteine + pyruvate + NH4(+) => L-cystine + H2O
label_lc: s-sulfanyl-l-cysteine + pyruvate + nh4(+) => l-cystine + h2o