Using NCc1cccc(Cl)c1, C[C@H](CCNC(=O)OC(C)(C)C)N1CCC(=O)CC1 to produce C[C@H](CCNC(=O)OC(C)(C)C)N1CCC(NCc2cccc(Cl)c2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.