| http://www.w3.org/ns/prov#value | - wherein R8 is hydrogen or ##STR4## wherein the alkyl moiety is straight or branched; wherein R9 is a straight or branched alkyl group having from 1 to 16 carbon atoms or --S(O)p --alkyl wherein the alkyl moiety is straight or branched and has from 1 to 16 carbon atoms and p is zero, one or two;
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