Using O=C(Nc1ccc(O)cc1C(=O)O)OCc1ccccc1, CNOC to produce CON(C)C(=O)c1cc(O)ccc1NC(=O)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.