preferred_name: O-succinyl-L-serine + hydrogen sulfide <=> L-cysteine + succinate
preferred_name_lc: o-succinyl-l-serine + hydrogen sulfide <=> l-cysteine + succinate
label: O-succinyl-L-serine + hydrogen sulfide <=> L-cysteine + succinate
label_lc: o-succinyl-l-serine + hydrogen sulfide <=> l-cysteine + succinate