| http://www.w3.org/ns/prov#value | - R9 is preferably phenyl unsubstituted or substituted with 1 to 3 substituents selected from the group consisting of halogen (preferably chlorine), optionally substituted alkyl [e.g., alkyl (preferably in particular methyl), haloalkyl (preferably trifluoromethyl), alkoxyalkyl, etc.], optionally substituted hydroxyl [e.g., hydroxyl, alkoxy (preferably methoxy), alkenyloxy, alkynyloxy, haloalkoxy, ar
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