| http://www.w3.org/ns/prov#value | - R1 is a substituent, selected from group A, comprising a C1 to C6 alkyl group, a C1 to C6 alkoxy group, a C3 to C7 cycloalkyl group, which may have one or more hetero atoms, a phenyl group, a hydroxy group, bromine, chlorine and fluorine, n being 0, 1 or 2;
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