Using Cc1cc(C#Cc2cn(-c3cncc(Cl)n3)c(C)n2)ccn1, COCCO to produce COCCOc1cncc(-n2cc(C#Cc3ccnc(C)c3)nc2C)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.