| http://www.w3.org/ns/prov#value | - ents, suitable phenyl substituents being the substituents mentioned above in the case ofR.sup.4 and R.sup.5 as phenyl substituents, or represent 3- to 6-membered heterocyclyl which has 1 to 3 identical or different hetero atoms, such as nitrogen, oxygen and sulphur, and which is monosubstituted to trisubstituted by identical or differentsubstituents, suitable substituents being the following: halo
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