| http://www.w3.org/ns/prov#value | - For the purpose of the present invention, the analogs to Bien and Klauke's compounds can be represented by the formula: ##STR4## wherein R4 is fluoro; R5 is hydrogen, optionally alkyl, alkenyl, aralkyl, aryl, haloalkyl or haloallyl; R6 is hydrogen or a substituent as defined hereafter; Q is a linking member, e.g. SO2 or --CO--; n is the number 0 or 1; R7 is hydrogen or lower alkyl; W is an anionic
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