Using O=C(Cl)c1ccc(F)c(Cl)c1F, CNCCO[Si](C)(C)C(C)(C)C to produce CN(CCO[Si](C)(C)C(C)(C)C)C(=O)c1ccc(F)c(Cl)c1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.