Using NO, CCn1c(=O)nc(-c2cccc(Cl)c2)c2ccc(C=O)nc21 to produce CCn1c(=O)nc(-c2cccc(Cl)c2)c2ccc(C=NO)nc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.