Using COC(=O)CN1CC=CCC(NC(=O)c2nccc3ccccc23)C1=O to produce O=C(O)CN1CC=CCC(NC(=O)c2nccc3ccccc23)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.