Using FC(F)(F)c1cccc(CCl)c1, Sc1nnc(-c2ccc3[nH]ncc3c2)o1 to produce FC(F)(F)c1cccc(CSc2nnc(-c3ccc4[nH]ncc4c3)o2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.