Using Nc1ccc(N2CCOCC2)cc1, NC(=O)c1cnc(Cl)nc1NCc1ccccc1 to produce NC(=O)c1cnc(Nc2ccc(N3CCOCC3)cc2)nc1NCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.