Using C[C@H](NC(=O)c1cnc2n1[C@](C)(Cc1ccc(C#N)cc1)C(=O)N2c1cc(Cl)cc(Cl)c1)C(=O)N[C@H](C)C(N)=S, CCOC(CBr)OCC to produce CC(NC(=O)[C@H](C)NC(=O)c1cnc2n1[C@](C)(Cc1ccc(C#N)cc1)C(=O)N2c1cc(Cl)cc(Cl)c1)c1nccs1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.