Using CC(=O)OC(C)=O, CC1=C(C(=O)OCC(Cl)(Cl)Cl)N2C(=O)C[C@H]2C1O to produce CC(=O)OC1C(C)=C(C(=O)OCC(Cl)(Cl)Cl)N2C(=O)C[C@@H]12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.