| http://www.w3.org/ns/prov#value | - benzoyl, formyl, pivaloyl, thenoyl and nicotinoyl), an alkoxycarbonyl group (preferably having from 2 to 20 carbon atoms, more preferably having from 2 to 16 carbon atoms, and particularly preferably having from 2 to 12 carbon atoms, such as methoxycarbonyl and ethoxycarbonyl), an aryloxycarbonyl group (preferably having from 7 to 20 carbon atoms, more preferably having from 7 to 16 carbon atoms,
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