Using OCCOCCO, O=CNc1ncc(C#Cc2ccc(Cl)cc2)c(Cl)n1 to produce Nc1ncc(C#Cc2ccc(Cl)cc2)c(OCCOCCO)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.