prov:value
| - A compound of claim 1 having the structure: ##STR109## wherein each of R3 and R4 are independently the same as or different from each other and are a hydrogen atom, a hydroxyl group, a substituted or unsubstituted, branched or unbranched alkyl, alkenyl, cycloalkyl, aryl, alkyloxy, aryloxy, arylalkyloxy, or pyridine group, or R3 and R4 bond together to form a piperidine group; R2 is a hydroxylamino
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