preferred_name: 4-imidazolone-5-propanoate = trans-urocanate + H2O
preferred_name_lc: 4-imidazolone-5-propanoate = trans-urocanate + h2o
label: 4-imidazolone-5-propanoate = trans-urocanate + H2O
label_lc: 4-imidazolone-5-propanoate = trans-urocanate + h2o