Using NO, CCn1c2c(c(=O)c3cc(C(C)C)ccc31)C(=O)c1ccccc1-2 to produce CCn1c2c(c(=O)c3cc(C(C)C)ccc31)C(=NO)c1ccccc1-2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.