Using O=C1CCC(=O)N1Br, CSc1nc(N)nc(-c2ccc(C)o2)c1C#N to produce CSc1nc(N)nc(-c2ccc(CBr)o2)c1C#N, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.