Using CCOC(=O)c1sc2ccc(Cl)cc2c1CBr, CNCC(OC)OC to produce CCOC(=O)c1sc2ccc(Cl)cc2c1CN(C)CC(OC)OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.