Using O=C(Nc1ccccc1[N+](=O)[O-])OCC1CCN(c2ccncc2)CC1 to produce Nc1ccccc1NC(=O)OCC1CCN(c2ccncc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.