Using C=CCBr, C=CCOC(=O)Cc1ccc(-c2ccc(OCc3ccc(C(F)(F)F)c(O)c3C=O)c(F)c2)cc1 to produce C=CCOC(=O)Cc1ccc(-c2ccc(OCc3ccc(C(F)(F)F)c(OCC=C)c3C=O)c(F)c2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.