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        "http://www.w3.org/ns/prov#value" : [ "Suitable hydrazides which can be used in the practice of this invention can be represented by the general structural formula: RiNH-NH-d-Ri wherein R is an aryl group including substituted aryl groups are exemplified by phenyl, naphthyl, alkaryl, such as, tolyl, xylyl, mesityl, ethylphenyl, propylphenyl, halide substituted phenyl such as bromophenyl, dichlorophenyl, carboxyphenyl and the like; and" ] ,
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