Using CCOC(=O)c1cnc2cnccc2c1, CC(C)(C)OC(=O)CBr to produce CCOC(=O)c1cnc2c(c1)CCN(CC(=O)OC(C)(C)C)C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.