Using O=S(=O)(c1ccc(-c2cc(Cl)ccc2OCc2ccccc2)cc1C(F)(F)F)N1CCOCC1 to produce O=S(=O)(c1ccc(-c2cc(Cl)ccc2O)cc1C(F)(F)F)N1CCOCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.