Using CCOC(CBr)OCC, O=C1Nc2ccccc2C1=NOCc1ccccc1 to produce CCOC(CN1C(=O)C(=NOCc2ccccc2)c2ccccc21)OCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.