Using CCOC(=O)C1=C(N)NC(N)=C(C(=O)OCC)C1c1cccc([N+](=O)[O-])c1, CC[O-] to produce CCOC(=O)C1=C(N)N=C(N)C(C)(C(=O)OCC)C1c1cccc([N+](=O)[O-])c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.