http://www.w3.org/ns/prov#value | - Specifically, functional groups which may have a halogen atom at the a-position in the electron-withdrawing group and the like such as a carbonyl group, ester group, amide group, sulfonyl group, nitrile group, and nitro group, can be shown as examples.Examples of halogen atoms binding to Y include a fluorine atom, chlorine atom, bromine atom, and iodine atom and chlorine and bromine atoms are pref
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