preferred_name: glutathione => L-cysteinylglycine + 5-oxo-L-proline
preferred_name_lc: glutathione => l-cysteinylglycine + 5-oxo-l-proline
label: glutathione => L-cysteinylglycine + 5-oxo-L-proline
label_lc: glutathione => l-cysteinylglycine + 5-oxo-l-proline