Using CNCc1cccc(Br)c1, COC(=O)C1CC(=O)CN1Cc1ccccc1 to produce CN(Cc1cccc(Br)c1)C1CC(C(=O)O)N(Cc2ccccc2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.