Using O=C([O-])Cc1nc(N2CCOCC2)cc(=O)[nH]1, Cn1ccc2c(N)cccc21 to produce Cn1ccc2c(NC(=O)Cc3nc(N4CCOCC4)cc(=O)[nH]3)cccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.