Using Cc1oc(-c2ccccc2)nc1CCOc1ccc(CC(Br)C#N)cn1 to produce Cc1oc(-c2ccccc2)nc1CCOc1ccc(/C=C/C#N)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.