Using Nc1ccc(F)c(Cl)c1, COC(=O)c1nnsc1CO[Si](C(C)C)(C(C)C)C(C)C to produce CC(C)[Si](OCc1snnc1C(=O)Nc1ccc(F)c(Cl)c1)(C(C)C)C(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.