Using Cc1ccc(C(=O)C(C)Br)c(C)c1, CCOC(=O)c1c(C)[nH][nH]c1=O to produce CCOC(=O)c1c(OC(C)C(=O)c2ccc(C)cc2C)n[nH]c1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.