Using O=CCCC=O, CCN(Cc1ccc(Cl)nc1)C(=C[N+](=O)[O-])NC to produce CCN(Cc1ccc(Cl)nc1)C1=C([N+](=O)[O-])C2CCC(O2)N1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.