| http://www.w3.org/ns/prov#value | - The R1 moiety can be alkyl, cycloalkyl (substituted or non-substituted), aryl, alkylaryl or alkenyl, and typically is a hydrocarbon chain which may be branched or unbranched, saturated or unsaturated, preferably an alkyl group having about 4 to about 18 carbon atoms.
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