Accordingly, the NO donor molecules of the present invention can hydrolyze into polyamine-carboxylic acids having the general formula (VI) ##STR8## wherein R12 and R13 are organic radicals, such as straight and branched chain alkyl groups containing 2 to 6 carbon atoms, R14 is a hydrogen atom or an organic radical, such as straight and branched chain alkyl and alkenyl groups containing 1 to 6 carb