prov:value
| - where R is a hydrogen atom, an alkoxy group or a halogen atom, m is an integer of 1 to 3, Y is amino, vinyl, glycidoxy, mercapto, methacryl, alkyl, alkenyl, alkynyl, ester, alkoxycarbonyl, aromatic hydrocarbon group, substituted aromatic hydrocarbon group, alkylmercapto, acyl, acylamino, nitro, imino, phenylimino, cyano, substituted azo, diazoamino, ureido, oxo or heterocyclic group, and n is an i
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