Using CCOC(=O)CCBr, N#CC(CCCOC1CCOCC1)c1ccc(Cl)c(Cl)c1 to produce CCOC(=O)CCC(C#N)(CCCOC1CCOCC1)c1ccc(Cl)c(Cl)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.