Using CCOC(=O)CN, O=C(O)c1ncc(C(=O)NCc2cccc3ccccc23)c(O)n1 to produce CCOC(=O)CNC(=O)c1ncc(C(=O)NCc2cccc3ccccc23)c(O)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.