| http://www.w3.org/ns/prov#value | - lkoxy-C.sub.2 -C.sub.6 -alkyl, particularly preferably represent in each case optionally fluorine-, chlorine-, brornine-, C.sub.1 -C.sub.5 -halogenoalkyl-,C.sub.1 -C.sub.5 -alkyl-or C.sub.1 -C.sub.5 -alkoxy-substituted phenyl or benzyl, or together particularly preferably represent an optionally C.sub.1 -C.sub.4 -alkyl-substituted C.sub.3 -C.sub.6 -alkylene radical in which optionally one methylen
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