prov:value
| - e identical or different substituents from the group consisting of halogen, cyano, trifluoromethyl, nitro, C1-4 alkyl, C1-4 alkoxy, optionally substituted phenyl, optionally substituted phenoxy, optionally substituted benzyloxy and hydrogen, and T is a linking group which is methyleneoxy, oxymethylene, ethylene, ethenylene, ethynylene or oxygen, except that X may be 4-nitrophenoxy, 2,4-dinitrophen
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