Using O=C1C(Cc2ccc(Br)cc2Cl)CCN1C1CCCCC1, C[Si](C)(C)C#N to produce N#Cc1ccc(CC2CCN(C3CCCCC3)C2=O)c(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.