Using CC(C)(C)[Si](OCCC#N)(c1ccccc1)c1ccccc1, [NH4+] to produce CC(C)(C)[Si](OCCC(=N)N)(c1ccccc1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.