| http://www.w3.org/ns/prov#value | - n alkyl group, an alkenyl group, an alkynyl group, a hydroxylated alkyl, alkenyl, or alkynyl group, an ether containing alkyl, alkenyl, or alkynyl group, a halogenated alkyl, alkenyl, or alkynyl group, or acyl or acyloxy containing alkyl, alkenyl, or alkynyl group; R4 is an alkyl group, an alkenyl group, an alkynyl group, or an alkyl, alkenyl, or alkynyl containing acyl group; R5 is an alkyl group
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