Using C#C[C@H](CCNC(=O)OC(C)(C)C)NC(=O)OC(C)(C)C, C[Si](C)(C)N=[N+]=[N-] to produce CC(C)(C)OC(=O)NCC[C@H](NC(=O)OC(C)(C)C)c1cn[nH]n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.