Using CCOC(=O)CBr, COc1c(N2CCNCC2)cc(Br)cc1C(C)(C)C to produce CCOC(=O)CN1CCN(c2cc(Br)cc(C(C)(C)C)c2OC)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.