Using CCS, CC(=O)OC1NC(=O)C1CCOC(=O)OCc1ccc([N+](=O)[O-])cc1 to produce CCSC1NC(=O)C1CCOC(=O)OCc1ccc([N+](=O)[O-])cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.