Using CCNC(=O)n1ccc2cc(Oc3ccnc(NC(=O)Oc4ccccc4)n3)ccc21, CON to produce CCNC(=O)n1ccc2cc(Oc3ccnc(NC(=O)NOC)n3)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.