Using ClCCN1CCCC1, C[Si](C)(C)CCOCn1nc(-c2cn[nH]c2)c2ccc(Br)cc21 to produce C[Si](C)(C)CCOCn1nc(-c2cnn(CCN3CCCC3)c2)c2ccc(Br)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.