Using COC(=O)CN, O=C(O)c1ncc(OCc2ccccc2)cc1OCc1ccccc1 to produce COC(=O)CNC(=O)c1ncc(OCc2ccccc2)cc1OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.