| http://www.w3.org/ns/prov#value | - An amide-acid polyene of the formula: ##STR21## wherein ??? denotes isomerism, R is a divalent organic moiety remaining after a primary diamine has reacted to form amide linkages;R' is an aromatic residue attached to at least 3 carbonyl groups at least two of which groups are attached to adjacent carbon atoms on the aromatic residue; A is an alkylene group having from 1 to 10 carbon atoms; Y is a
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