Using CCOC(=O)CBr, O=C(OCC1CCc2c(O)cccc2C1)N(c1ccccc1)c1ccccc1 to produce CCOC(=O)COc1cccc2c1CCC(COC(=O)N(c1ccccc1)c1ccccc1)C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.