Using COC(=O)c1cc(C#N)cc2c1c(C)cn2C(C)C, C[Si](C)(C)N=[N+]=[N-] to produce COC(=O)c1cc(-c2nnn[nH]2)cc2c1c(C)cn2C(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.