| http://www.w3.org/ns/prov#value | - ine residue selected from the group consisting of --NH2, --NHSO2 CH3, --NHCOCH3 and --NHCONH2 and the other group is hydrogenor an alkoxy group of 1 to 3 carbon atoms and R3 is hydrogen; R4 is hydrogen and R5 is hydrogen or an alkyl group of 1 to 3 carbon atoms; Y is --SO2 --; and n is an integer of 2 to 4, or an acid addition salt thereof. 14.
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