Using CCOC(=O)CCc1cc(F)c(OCc2c(-c3ccc(Cl)cc3)csc2C(F)(F)F)c(F)c1 to produce OCCCc1cc(F)c(OCc2c(-c3ccc(Cl)cc3)csc2C(F)(F)F)c(F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.