Using COC(=O)c1cnccc1NC(=O)C(NC(=O)OCc1ccccc1)C(C)C to produce CC(C)C(NC(=O)OCc1ccccc1)C(=O)Nc1ccncc1C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.