| http://www.w3.org/ns/prov#value | - such as p-methyl-benzyl, 3-(p-ethyl-phenyl)-propyl and 5-(1-naphthyl)-pentyl; (c) an ester (--COOR) where R may be for example a straight chain alkyl group having for example 1 to about 20 carbon atoms, particularly 1 to about 12 carbon atoms, such as
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