| http://www.w3.org/ns/prov#value | - The alkenyl group is preferably a substituted or unsubstituted alkenyl group having from 2 to 30 carbon atoms, such as vinyl, allyl, prenyl,geranyl, oleyl, 2-cyclopenten-1-yl or 2-cyclohexen-1-yl.The alkynyl group is a substituted or unsubstituted alkynyl group having from 2 to 30 carbon atoms, and examples thereof include ethynyl and propargyl.The aryl group is a substituted or unsubstituted aryl
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