Using CCOC(=O)C1CCN(CC(O)CN2c3ccccc3CCc3ccccc32)CC1, CCCBr to produce CCCOC(CN1CCC(C(=O)OCC)CC1)CN1c2ccccc2CCc2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.