| prov:value
| - nylamino, pyridylamino, and dipyridylamino), an alkoxy group (preferably having from 1 to 20 carbon atoms, more preferably having from 1 to 12 carbon atoms, and particularly preferably having from 1 to 8 carbon atoms, such as methoxy, ethoxy, isopropoxy, n-butoxy, and t-butoxy), an aryloxy group (preferably having from 6 to 10 carbon atoms, and particularly preferably having 6 carbon atoms, such a
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