Using CCCC(C)Br, C[Si](C)(C)CCOCn1ccc2c(-c3cn[nH]c3)ccnc21 to produce CCCC(C)n1cc(-c2ccnc3c2ccn3COCC[Si](C)(C)C)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.