preferred_name: an S-substituted glutathione + H2O <=> an S-substituted L-cysteinylglycine + L-glutamate
preferred_name_lc: an s-substituted glutathione + h2o <=> an s-substituted l-cysteinylglycine + l-glutamate
label: an S-substituted glutathione + H2O <=> an S-substituted L-cysteinylglycine + L-glutamate
label_lc: an s-substituted glutathione + h2o <=> an s-substituted l-cysteinylglycine + l-glutamate