Using COC(=O)CN, O=C(O)c1ncc(NC(=O)C(c2ccccc2)c2ccccc2)c(O)n1 to produce COC(=O)CNC(=O)c1ncc(NC(=O)C(c2ccccc2)c2ccccc2)c(O)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.