Using NC1CCN(Cc2ccccc2)CC1, O=Cc1ccccc1[N+](=O)[O-] to produce O=[N+]([O-])c1ccccc1CNC1CCN(Cc2ccccc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.