Using CC(=O)Oc1ccc(CBr)cc1, O=C1Nc2ccccc2C1=O to produce CC(=O)Oc1ccc(CN2C(=O)C(=O)c3ccccc32)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.