| http://www.w3.org/ns/prov#value | - The substituent of optionally substituted cycloalkyl, cycloalkylalkyl, phenyl and aralkyl on the ring at R and R1 is halogen (e.g., chlorine, bromine, fluorine and iodine), alkyl (same as alkyl at R and R1), alkoxy (linear or branched alkoxy having 1 to 6 carbon atoms, such as methoxy, ethoxy, propoxy, isopropoxy, butoxy, isobutoxy, sec-butoxy, tert-butoxy, pentyloxy, hexyloxy and the like), aralk
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