Using C#CCO, O=C(NCc1ccc(Cl)cc1)c1cnc2cnc(Br)nc2c1O to produce O=C(NCc1ccc(Cl)cc1)c1cnc2cnc(C#CCO)nc2c1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.