prov:value
| - (II) each X is independently hydrogen, a halogen (such as flourine, chlorine and/or bromine), a C1 -C12 linear or cyclic alkyl, alkoxy, aryl or aryloxy radical, such as methyl, ethyl, isopropyl, cyclopentyl, cyclohexyl, methoxy, ethoxy, benzyl, tolyl, xylyl, phenoxy and/or xylynoxy.
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