Using Cn1c(CBr)c(C(=O)c2ccccc2)c(=O)n(C)c1=O, CCOC(=O)CCCN to produce CCOC(=O)CCCn1cc2c(c1-c1ccccc1)c(=O)n(C)c(=O)n2C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.