Using [NH4+], C[C@H]1C(=O)N(C(=O)OC(C)(C)C)[C@@H]1c1cn2cc(C(C)(C)C)ccc2n1 to produce C[C@@H](C(N)=O)[C@H](NC(=O)OC(C)(C)C)c1cn2cc(C(C)(C)C)ccc2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.