| http://www.w3.org/ns/prov#value | - eferably 6 to 20 carbon atoms, and particularly preferably 6 to 12 carbon atoms, e.g., phenyl, p-methylphenyl, naphthyl, and anthranyl), an amino group (preferably an amino group having 0 to 30 carbon atoms, more preferably 0 to 20 carbon atoms, and particularly preferably 0 to 10 carbon atoms, e.g., amino, methylamino, dimethylamino, diethylamino, dibenzylamino, diphenylamino, and ditolylamino),
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