Using COc1cc(C2Nc3ccc(C#N)cc3C3c4ccccc4CCC23)ccc1O to produce COc1cc(C2Nc3ccc(CN)cc3C3c4ccccc4CCC23)ccc1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.