Using C[Si](C)(C)CCOCCl, Cn1cc(-c2cc3c(Cl)c(Cl)cnc3[nH]2)cn1 to produce Cn1cc(-c2cc3c(Cl)c(Cl)cnc3n2COCC[Si](C)(C)C)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.