Using CN1C(=O)c2ccccc2C1c1c[nH]c2ccccc12, CC(C)(C)OC(=O)CBr to produce CN1C(=O)c2ccccc2C1c1cn(CC(=O)O)c2ccccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.