Using O=[N+]([O-])O, CCCc1ccccc1C(=O)NC1CCc2cccc(Cl)c2C1 to produce CCCc1ccccc1C(=O)NC1CCc2c([N+](=O)[O-])ccc(Cl)c2C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.