| http://www.w3.org/ns/prov#value | - where m represents an integer ranging from 1 to 15, n represents an integer ranging from 0 to 15, the sum of m and n ranges from 10 to 30, q represents an integer ranging from 0 to 2, R represents an alkyl or an alkoxyl group, and X is a halogen atom or an alkoxyl group; or
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