| http://www.w3.org/ns/prov#value | - R2 is as previously defined hereinabove; R4 represents hydrogen, chlorine, bromine, iodine, fluorine, SR7, or hydroxy, with the proviso that where R4 is other than fluorine, then R2 represents hydrogen; R7 represents tetrazole, substituted tetrazole, triazole, (C1-C4)alkyl, (C1-C4)alkyl-CO2R8; and R5, R6, and R8 each independently represent hydrogen, (C1-C20)alkyl, (C2-C6)alkenyl, (C1-C6)alkylaryl
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