| http://www.w3.org/ns/prov#value | - epresents ???SO3M, ???OSO3M, ???CO2M, or ???OPO3M2, where M is a cation as defined above for formula (1), wherein Rf and R???f represent the same or different fluorinated alkylaryl group having 4 to 10 carbon atoms and at least 7 fluorine atoms, with 3 fluorine atoms on the end carbon atom, either D or Y is hydrogen and the other is ???SO3M wherein M is a cation defined above for formula (1), and
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