Using COC(=O)CN, Cc1ccccc1C(CC(=O)c1ccc(=O)n(C)c1)c1ccc(C(=O)O)cc1 to produce COC(=O)CNC(=O)c1ccc(C(CC(=O)c2ccc(=O)n(C)c2)c2ccccc2C)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.