Using COc1cc(Oc2ccc3c(c2)c(C#N)cn3C)cc(OC)c1OC to produce COc1cc(Oc2ccc3c(c2)c(C#N)cn3C)cc(OC)c1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.