Using FC(F)(F)Oc1ccc2[nH]c(S)nc2c1, COc1c(C)cnc(CCl)c1C to produce COc1c(C)cnc(CSc2nc3cc(OC(F)(F)F)ccc3[nH]2)c1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.