| http://www.w3.org/ns/prov#value | - In one subset of this embodiment, B is an aryl optionally substituted with one or more substituents selected from the group consisting of alkyl and R*OC(O)NH??? wherein R* is optionally substituted alkyl or optionally substituted polyether, preferably hydroxyl substituted alkyl or hydroxyl substituted hydrofluoropolyether.
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