5-(Aminocarbonyl)-1H-imidazol-4-yl cyclobutanecarboxylate 5-Carbamoyl-1H-imidazole-4-yl cyclobutane-1'-carboxylate 78682-38-9 Cyclobutanecarboxylic acid, 5-(aminocarbonyl)-1H-imidazol-4-yl ester