Using CI, Cc1ccc2c(S)nc(C(F)(F)c3ccc(F)cn3)nc2c1 to produce CSc1nc(C(F)(F)c2ccc(F)cn2)nc2cc(C)ccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.