Using CCOC(=O)C(=O)CBr, CC(C)(C(=N)Nc1ccc(Br)cc1F)c1c(Cl)cccc1Cl to produce CCOC(=O)C1(O)CN(c2ccc(Br)cc2F)C(C(C)(C)c2c(Cl)cccc2Cl)=N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.