Using O=C(c1ccccc1)c1ccc(N2CCCCC2)c([N+](=O)[O-])c1 to produce Nc1cc(C(=O)c2ccccc2)ccc1N1CCCCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.