| http://www.w3.org/ns/prov#value | - R16 is a halogen atom (preferably Cl), an aliphatic group having 1 to 24 (preferably 1 to 18) carbon atoms {more preferably an alkyl group (for example, those the same as the examples of the alkyl group serving as R15) or a cycloalkyl group having 3 to 18 (preferably 5 to 17) carbon atoms (e.g., cyclopentyl and cyclohexyl groups)}, an aryl group having 6 to 32 (preferably 6 to 24) carbon atoms (e.
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