| http://www.w3.org/ns/prov#value | - These heterocyclic groups may have one or more substituents such as a hydroxyl group, an alkyl group, a halogen atom, a nitro group, a carboxyl group, a cyano group, an aryl group which may have a substituent (for example, a halogen atom or a nitro group), a heterocyclic group which may have a substituent (for example, a halogen atom or a nitro group) and a group of the formula -Z-R where Z repres
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