| http://www.w3.org/ns/prov#value | - wherein x and y are integers between 0 and 20 inclusive, with the sum of x and y being an integer of 20 or less, wherein R is a functionality selected from the group consisting of substituted or unsubstituted aromatic hydrocarbon groups, branched or unbranched alkyl groups, the alkyl group having between 1 and 27 carbon atoms, and mixtures thereof, and wherein each variable R???, R???, R?????? and
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