| http://www.w3.org/ns/prov#value | - Preferably R.sub.x is a hydrogen atom.Q.sub.20 represents a group capable of being substituted on the benzene ring, and can specifically include alkyl groups with 1 to 25 carbons (e.g., methyl, ethyl, propyl, isopropyl, tert-butyl, pentyl, hexyl, cyclohexyl groups, etc.), halogenatedalkyl groups (e.g., trifluoromethyl, perfluorooctyl groups, etc.), cycloalkyl groups (e.g., cyclohexyl, cyclopentyl
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