Using COc1cc(C(CN2C(=O)c3ccccc3C2=O)Nc2ccc(C#N)cc2)ccc1OCc1ccccc1 to produce COc1cc(C(CN)Nc2ccc(C#N)cc2)ccc1OCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.