Using CCO, COc1cc(Nc2cc(-n3nc(C)c4c3CC(C)(C)CC4=O)ccc2C#N)cc(OC)c1OC to produce COc1cc(Nc2cc(-n3nc(C)c4c3CC(C)(C)CC4=O)ccc2C(N)=O)cc(OC)c1OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.