| http://www.w3.org/ns/prov#value | - which may have a substituent,an aryl group which may have a substituent, or a halogen atom; a and b are each independently an integer of 0 to 4; c and d are each independently an integer of 0 to 3; and m is an integer of 0 or 1, provided that when m=1, Z is a straight-chainalkylene group having 2 to 12 carbon atoms, --O--, --S--, --SO.sub.2 --, --CO--, ##STR1495## in which Z.sup.1 and Z.sup.2 are
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