| 摘要 |
A compound is shown by the following formula (5) in which at least one of Rf groups represents a fluorine atom or a linear or branched perfluoroalkyl group having 1 to 10 carbon atoms, A′ represents a substituted or unsubstituted, linear or branched alkylene group having 1 to 20 carbon atoms, an alkylene group having at least one hetero atom, or a single bond, G represents a divalent organic group having a fluorine atom or a single bond, Mm+ represents an onium cation, m represents a natural number of 1 to 3, and p represents a natural number of 1 to 8.
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