prov:value
| - arbon atoms, or together form a 5 to 9 membered ring with the carbons forming the vinyl group; (b) B is C, S, N, C, C(O), C(O)NH or C(O)N(R8), in which R8 is an alkyl group having 1 to 5 carbon atoms; (c) K is an aromatic group selected from the group of aromatic groups having the structures: in which R5, R6, and R7 are a linear or branched chain alkyl, alkyloxy, alkyl amine, alkyl sulfide, alkyle
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