Using C[N+](=O)[O-], O=C1C(=Cc2cccnc2)N2CCC1CC2 to produce O=C1C2CCN(CC2)C1C(C[N+](=O)[O-])c1cccnc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.