Using CCS(=O)(=O)c1cc2c(cc1Br)C(C)(C)CN2C(C)=O to produce CCS(=O)(=O)c1ccc2c(c1)N(C(C)=O)CC2(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.