Using ClCl, CCCOc1ccc2c(c1)OC(C(F)(F)F)C(C(=O)OCC)=C2 to produce CCCOc1cc2c(cc1Cl)C=C(C(=O)OCC)C(C(F)(F)F)O2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.