Using CCOCCn1nc(C(=O)OC)c([N+](=O)[O-])c1C(=O)O, CN(C)C=O to produce CCOCCn1nc(C(=O)OC)c([N+](=O)[O-])c1C(N)=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.