Using CCCCCN1C(=O)C(C)(C)c2cc(NC(=O)CCc3ccccc3)c([N+](=O)[O-])cc21, O=C([O-])[O-] to produce CCCCCN1C(=O)C(C)(C)c2cc(N(C)C(=O)CCc3ccccc3)c([N+](=O)[O-])cc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.