Using OCCO, COC(=O)c1ccc(C=O)c([N+](=O)[O-])c1 to produce COC(=O)c1ccc(C2OCCO2)c([N+](=O)[O-])c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.