Using CC(=O)OCCBr, CC(C)(C)OC(=O)N1CCc2c([nH]c3ccccc23)C1 to produce CC(=O)OCCn1c2c(c3ccccc31)CCN(C(=O)OC(C)(C)C)C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.