Using CC(C)(C)C(=O)O, NCc1ccc2nc(Cl)nc(N3CCOCC3)c2n1 to produce CC(C)(C)C(=O)NCc1ccc2nc(Cl)nc(N3CCOCC3)c2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.