Using CC(C)[Si](C(C)C)(C(C)C)n1cc(Cc2ccc(NCc3ccccc3)cc2)c2cccnc21 to produce CC(C)[Si](C(C)C)(C(C)C)n1cc(Cc2ccc(N)cc2)c2cccnc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.