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