Using CCOC(=O)C(=CNc1cccc(Br)c1)C(=O)c1cccnc1Cl to produce CCOC(=O)c1cn(-c2cccc(Br)c2)c2ncccc2c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.