| http://www.w3.org/ns/prov#value | - om 1 to 3 carbon atoms, which may have a substituent, a fluoroalkyl group having from 1 to 3 carbon atoms, which may have a substituent, an alkoxy group, having from 1 to 3 carbon atoms, which may have a substituent, a dialkylamino group having from 1 to 3 carbon atoms, which may have a substituent, a halogen atom or a hydrogen atom; and n is an integer of from 1 to 3, provided that when n is 2 or
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