Using CCOC(=O)c1coc2cc(Br)ccc12, O=C1NC(=O)c2ccccc21 to produce CCOC(=O)c1coc2cc(N3C(=O)c4ccccc4C3=O)ccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.