Using COC(=O)CCc1cc(F)c(S(=O)(=O)c2ccc(Cl)cc2)nc1Cc1cc(F)ccc1F to produce O=C(O)CCc1cc(F)c(S(=O)(=O)c2ccc(Cl)cc2)nc1Cc1cc(F)ccc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.