Using COC(=O)C1=NC2C(=O)N(C(C(=O)OCc3ccccc3)=C(C)C)C2O1 to produce COC(=O)C1NC2C(=O)N(C(C(=O)OCc3ccccc3)=C(C)C)C2O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.