Using O=C1c2ccccc2C(=O)N1n1cccc1, O=C(O)c1ccc[nH]1 to produce O=C(c1ccc[nH]1)c1cccn1N1C(=O)c2ccccc2C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.