Using CS(=O)(=O)NC(=O)c1cc(F)c(F)cc1F, Oc1cnc(OC2CCC2)c(Cl)c1 to produce CS(=O)(=O)NC(=O)c1cc(F)c(Oc2cnc(OC3CCC3)c(Cl)c2)cc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.