Using CC1C(=O)N2C(C(=O)OCc3ccccc3)=C(Cl)CC12, CC=O to produce CC(O)C1(C)C(=O)N2C(C(=O)OCc3ccccc3)=C(Cl)CC21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.