Using CCOC(=O)CBr, Cn1c(CNc2ccc(C#N)cc2)nc2cc(C(C)(CN)C(=O)N3CCCC3)ccc21 to produce CCOC(=O)CNCC(C)(C(=O)N1CCCC1)c1ccc2c(c1)nc(CNc1ccc(C#N)cc1)n2C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.