| http://www.w3.org/ns/prov#value | - "Alkenyl alkyl" refers to a chemical group having the structure --CH.dbd.CH--R.sub.4--, wherein R.sub.4 is alkyl or aryl. Preferably, the alkenyl alkyl group is of the structure --CH.dbd.CH--(CH.sub.2).sub.nR.sub.5--, wherein n is an integer
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