prov:value
| - r aralkyl group; vinyl, allyl, propenyl, isopropenyl, butenyl, pentenyl, hexenyl, cyclohexenyl, or a similar alkenyl group; or the aforementioned groups wherein one or more hydrogen atoms of the monovalent hydrocarbon groups is substituted with a halogen atom such as a fluorine atom, chlorine atom, bromine atom, or another halogen atom, as well as a cyano group.
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