Using Fc1c(Cl)ccc2ccn(-c3cccnc3)c12, CCOC(=O)c1cccc(S)c1F to produce CCOC(=O)c1cccc(Sc2cn(-c3cccnc3)c3c(F)c(Cl)ccc23)c1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.