Using O=C(O)CCC(=O)c1ccc(N2CCC(c3ccccc3)CC2)cc1, NO to produce O=C(O)CC/C(=N/O)c1ccc(N2CCC(c3ccccc3)CC2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.