Using CC(C)(C)OC(=O)N1Cc2[nH]nc(N)c2C1, O=C(Cl)OCc1ccccc1 to produce CC(C)(C)OC(=O)N1Cc2[nH]nc(NC(=O)OCc3ccccc3)c2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.