prov:value
| - 3 to 5 carbon atoms such as allyl, 1-, 2- or 3-butenyl, 1-, 2-, 3- or 4-pentenyl and the like, lower alkynyl containing from 3 to 5 carbon atoms such as propargyl, 1-, 2- or 3-butynyl, 1-, 2-, 3- or 4-pentynyl and the like, phenyl lower alkyl wherein the lower alkyl contains from 1 to 3 carbon atoms such as benzyl, phenethyl, phenylpropyl and the like, phenyl lower alkenyl wherein the lower alkeny
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