label: tert-butyl-2-(4,5-dihydrogen-4,4,5,5-tetramethyl-3-O-1H-imidazole-3-cationic-1-oxyl-2-pyrrolidine-1-carboxylic ester)
label_lc: tert-butyl-2-(4,5-dihydrogen-4,4,5,5-tetramethyl-3-o-1h-imidazole-3-cationic-1-oxyl-2-pyrrolidine-1-carboxylic ester)