Using CCCCC1=C(C(=O)OCC)C(c2ccc(F)c(Br)c2)C2=C(COCC2=O)N1 to produce CCCC1OC(=O)C2=C1NC1=C(C(=O)COC1)C2c1ccc(F)c(Br)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.