Using CCOC(=O)CBr, O=C(CC(c1ccccc1)c1ccccc1)N1CCNCC1 to produce CCOC(=O)CN1CCN(C(=O)CC(c2ccccc2)c2ccccc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.