Using CC(C)(C)OC(=O)N(CCO)CC(=O)N1CCSc2ccc([N+](=O)[O-])cc21 to produce CC(C)(C)OC(=O)N(CCO)CCN1CCSc2ccc([N+](=O)[O-])cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.