preferred_name: hydrogen cyanide + L-cysteine => 3-cyano-L-alanine + hydrogen sulfide + H(+)
preferred_name_lc: hydrogen cyanide + l-cysteine => 3-cyano-l-alanine + hydrogen sulfide + h(+)
label: hydrogen cyanide + L-cysteine => 3-cyano-L-alanine + hydrogen sulfide + H(+)
label_lc: hydrogen cyanide + l-cysteine => 3-cyano-l-alanine + hydrogen sulfide + h(+)