Using CCOC(=O)N1C(=O)c2ccccc2C1=O, NCc1ccc(C(=O)O)cc1 to produce O=C(O)c1ccc(CN2C(=O)c3ccccc3C2=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.