Using O=C(CBr)c1ccc(OCCCCl)cc1, CCOC(=O)Cc1ccccn1 to produce CCOC(=O)C(CC(=O)c1ccc(OCCCCl)cc1)c1ccccn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.