Using CN(Cc1ccc2c(Br)c(O)ccc2c1)C(=O)c1oc2ccccc2c1CCc1ccccc1, COC(=O)CBr to produce COC(=O)COc1ccc2cc(CN(C)C(=O)c3oc4ccccc4c3CCc3ccccc3)ccc2c1Br, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.