| http://www.w3.org/ns/prov#value | - cyclic hydrocarbon-based chains containing from 1 to 22 carbon atoms, for example from 6 to 18 carbon atoms, such as from 10 to 14 carbon atoms, optionally substituted with at least one group chosen from aryl (--C.sub.6H.sub.5), ester (--COOR'' with R''
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