Using CCOC(=O)CBr, Clc1cccc(Cl)c1COc1ccc(C2CNCCO2)cc1 to produce CCOC(=O)CN1CCOC(c2ccc(OCc3c(Cl)cccc3Cl)cc2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.