Using CN(C)C=O, COc1ccc(Cn2c(=O)c3cc(Br)ccc3n(C3CCOCC3)c2=O)cc1OC to produce COc1ccc(Cn2c(=O)c3cc(C#N)ccc3n(C3CCOCC3)c2=O)cc1OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.