Using CSc1ccc2nc(C(O)(c3ncncc3Br)C(C)C)ccc2c1 to produce CSc1ccc2nc(C(O)(c3ccncn3)C(C)C)ccc2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.