Using CC(C)[Si](C(C)C)(C(C)C)n1ccc2c(N3CCN(Cc4ccccc4)CC3)cccc21 to produce c1ccc(CN2CCN(c3cccc4[nH]ccc34)CC2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.