preferred_name: 2-aminoprop-2-enoate + hydrogen sulfide + H(+) => L-cysteine
preferred_name_lc: 2-aminoprop-2-enoate + hydrogen sulfide + h(+) => l-cysteine
label: 2-aminoprop-2-enoate + hydrogen sulfide + H(+) => L-cysteine
label_lc: 2-aminoprop-2-enoate + hydrogen sulfide + h(+) => l-cysteine