Using CCOC(=O)C(C)Br, Oc1ccc(-c2nnnc(-c3cccc4ccccc34)c2-c2cccc3ccccc23)c(O)c1 to produce CCOC(=O)C(C)Oc1ccc(-c2nnnc(-c3cccc4ccccc34)c2-c2cccc3ccccc23)c(O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.