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        "http://www.w3.org/ns/prov#value" : [ "The peptides of this invention may be prepared by initially reacting a first appropriately protected amino acid with a second appropriately protected amino acid in an organic solvent inert to the reactants, in the presence of a suitable peptide coupling agent according to the following scheme: ##STR3## wherein Z is a suitable nitrogen protecting group and R1 and R2 are as defined hereinabove." ] ,
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