| http://www.w3.org/ns/prov#value | - ylamino, phenyl, or C1-C4 alkyl substituted phenyl; R2 is C1-C6 alkyl or C7-C10 alkyl substituted phenyl; n is 0, 1, 2, 3 or 4; X is ##STR20## wherein R3 is hydrogen or --COOH; R4 is hydrogen, methyl or --CH2COOH; Z is ##STR21## R5, R6, and R7 independently are C1 -C4 alkyl, C1 -C4 alkoxy, C1 -4 alkylamino, phenyl, C1 -C4 alkyl substituted phenyl, hydrogen or hydroxyl; and r is an integer of from
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