Using Nc1cc(OCCCC(=O)[O-])ccc1C=O, NCCNc1ccc([N+](=O)[O-])cc1[N+](=O)[O-] to produce Nc1cc(OCCCC(=O)NCCNc2ccc([N+](=O)[O-])cc2[N+](=O)[O-])ccc1C=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.