prov:value
| - Examples of X include halogen atoms such as a fluorine atom, chlorine atom, bromine atom and iodine atom; C1-20 alkyl groups such as a methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, octyl group and 2-ethylhexyl group; C1-20 alkoxy groups such as a methoxy group, ethoxy group, propoxy group, butoxy group and phenoxy group; and C6-20 aryl groups, alkylaryl groups or aryla
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