Using O=C(OC(C(=O)c1ccc([N+](=O)[O-])cc1)c1ccc([N+](=O)[O-])cc1)c1ccccc1 to produce O=C(C(=O)c1ccc([N+](=O)[O-])cc1)c1ccc([N+](=O)[O-])cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.