Using Cc1[nH]c2ncccc2c1C(=O)OC(C)(C)C, CCC(=O)C(C)Br to produce CCC(=O)C(C)n1c(C)c(C(=O)OC(C)(C)C)c2cccnc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.