Using CCOC(=O)C(C(=O)OC(C)(C)C)c1cnc([N+](=O)[O-])cc1C to produce CCOC(=O)Cc1cnc([N+](=O)[O-])cc1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.