prov:value
| - hyl or trifluoromethoxy; and R5 and R6 are each independently a hydrogen, methyl, ethyl, halo, trifluoromethyl, trifluoromethoxy, amino, C1-C2 alkylamino, di(C1-C2 alkyl)amino, hydroxy, methoxy or ethoxy radical; and R7 is a hydrogen, methyl, ethyl, halo, trifluoromethyl, trifluoromethoxy, hydroxy, methoxy or ethoxy radical; and wherein aryl is a phenyl or biphenyl radical which is optionally benz
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